diff --git a/DESCRIPTION b/DESCRIPTION
index ba7c697..c2dc953 100755
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,8 +2,8 @@ Package: HGNChelper
 Maintainer: Levi Waldron <lwaldron.research@gmail.com>
 Depends: R (>= 3.5.0), methods, utils
 Author: Levi Waldron and Markus Riester
-Version: 0.8.6
-Date: 2020-9-11
+Version: 0.8.7
+Date: 2020-12-29
 License: GPL (>=2.0)
 Title: Identify and Correct Invalid HGNC Human Gene Symbols and MGI Mouse Gene Symbols
 Description: Contains functions for
diff --git a/R/checkGeneSymbols.R b/R/checkGeneSymbols.R
index 5599a35..7bfdec2 100755
--- a/R/checkGeneSymbols.R
+++ b/R/checkGeneSymbols.R
@@ -8,10 +8,10 @@
 #' @importFrom methods is
 #' @importFrom utils read.csv data
 #' 
-#' @param x A character vector of gene symbols to check for mogrified or outdated values
-#' @param chromosome A integer vector containing the chromosome number you want to 
-#' specify for each gene provided through the argument \code{x}. It should be the 
-#' same length as the input for \code{x}. Currently, this argument is applicable
+#' @param x A character vector of gene symbols to check for modified or outdated values
+#' @param chromosome An optional integer vector containing the chromosome number of each gene
+#' provided through the argument \code{x}. It should be the 
+#' same length as the input for \code{x}. Currently, this argument is implemented
 #' only for human gene cases.
 #' @param unmapped.as.na If \code{TRUE} (default), unmapped symbols will appear as 
 #' NA in the \code{Suggested.Symbol} column. If \code{FALSE}, the original unmapped 
diff --git a/R/zzz.R b/R/zzz.R
new file mode 100644
index 0000000..8671c51
--- /dev/null
+++ b/R/zzz.R
@@ -0,0 +1,13 @@
+.onLoad <- function(libname, pkgname) {
+  packageStartupMessage(
+    paste(
+      "Please cite our software :) \n \n",
+      "Sehyun Oh et al.",
+      "HGNChelper: identification and correction of invalid gene symbols for human and mouse.",
+      "F1000Research 2020, 9:1493.",
+      "DOI: https://doi.org/10.12688/f1000research.28033.1 \n \n",
+      "Type `citation('HGNChelper')` for a BibTeX entry."
+    )
+  )
+  invisible()
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index c679255..8322cec 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,12 @@
 
 # HGNChelper: identification and correction of invalid gene symbols for human and mouse
 
-A [pre-print is available on bioRxiv](https://www.biorxiv.org/content/10.1101/2020.09.16.300632v2). 
+Please cite our software:
+
+Oh S, Abdelnabi J, Al-Dulaimi R et al. HGNChelper: identification and
+correction of invalid gene symbols for human and mouse. F1000Research 2020, 9:1493
+(https://doi.org/10.12688/f1000research.28033.1)
+
 
 ## Updating
 
diff --git a/index.md b/index.md
index 5494cc1..a27451f 100644
--- a/index.md
+++ b/index.md
@@ -4,7 +4,12 @@
 
 # HGNChelper: Identification and correction of invalid gene symbols for human and mouse
 
-A [pre-print is available on bioRxiv](https://www.biorxiv.org/content/10.1101/2020.09.16.300632v2). 
+Please cite our software:
+
+Oh S, Abdelnabi J, Al-Dulaimi R et al. HGNChelper: identification and
+correction of invalid gene symbols for human and mouse. F1000Research
+2020, 9:1493
+[https://doi.org/10.12688/f1000research.28033.1](https://doi.org/10.12688/f1000research.28033.1)
 
 ## Why HGNChelper?
 
diff --git a/inst/CITATION b/inst/CITATION
new file mode 100644
index 0000000..079b076
--- /dev/null
+++ b/inst/CITATION
@@ -0,0 +1,18 @@
+citHeader("Please cite our software :)")
+
+citEntry(entry = "Article",
+    title = "HGNChelper: identification and correction of invalid gene symbols for human and mouse",
+    author = personList(as.person("Sehyun Oh"), as.person("Jasmine Abdelnabi"),
+        as.person("Ragheed Al-Dulaimi"), as.person("Ayush Aggarwal"), as.person("Marcel Ramos"),
+        as.person("Carmen Rodriguez Cabrera"), as.person("Tiffany Chan"),
+        as.person("Sean Davis"), as.person("Markus Riester"),
+        as.person("Levi Waldron")),
+    journal = "F1000 Research",
+    year = "2020",
+    volume = "9:1493",
+    textVersion =
+    paste("Sehyun Oh et al.",
+        "HGNChelper: identification and correction of invalid gene symbols for human and mouse.",
+        "F1000Research 2020, 9:1493.",
+        "DOI: https://doi.org/10.12688/f1000research.28033.1")
+)
diff --git a/man/checkGeneSymbols.Rd b/man/checkGeneSymbols.Rd
index 8dc2a3a..a764ad6 100644
--- a/man/checkGeneSymbols.Rd
+++ b/man/checkGeneSymbols.Rd
@@ -13,11 +13,11 @@ checkGeneSymbols(
 )
 }
 \arguments{
-\item{x}{A character vector of gene symbols to check for mogrified or outdated values}
+\item{x}{A character vector of gene symbols to check for modified or outdated values}
 
-\item{chromosome}{A integer vector containing the chromosome number you want to 
-specify for each gene provided through the argument \code{x}. It should be the 
-same length as the input for \code{x}. Currently, this argument is applicable
+\item{chromosome}{An optional integer vector containing the chromosome number of each gene
+provided through the argument \code{x}. It should be the 
+same length as the input for \code{x}. Currently, this argument is implemented
 only for human gene cases.}
 
 \item{unmapped.as.na}{If \code{TRUE} (default), unmapped symbols will appear as