diff --git a/DESCRIPTION b/DESCRIPTION
index e8b9542..b4579d7 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -7,7 +7,7 @@ Authors@R: c(
   )
 Description: Citizen Weather Stations data access and cleaning toolbox.
 Depends: R (>= 4.1.0)
-Imports: CrowdQCplus, testthat, data.table, devtools, dplyr, ggplot2, ggspatial, httr, jsonlite, sf, sftime, stats, terra, RCurl, tidyr, tidyterra, tidyverse, fields, lubridate, methods, RColorBrewer, scales, utils, knitr, rmarkdown
+Imports: CrowdQCplus, testthat, data.table, devtools, dplyr, ggplot2, ggspatial, httr, jsonlite, pak, sf, sftime, stats, terra, RCurl, tidyr, tidyterra, tidyverse, fields, lubridate, methods, RColorBrewer, scales, utils, knitr, rmarkdown
 Remotes: dafenner/CrowdQCplus
 Encoding: UTF-8
 License: MIT + file LICENSE
diff --git a/man/download_ghcnh.Rd b/man/download_ghcnh.Rd
index efcdf8e..4b2c0a6 100644
--- a/man/download_ghcnh.Rd
+++ b/man/download_ghcnh.Rd
@@ -19,3 +19,6 @@ a data.frame with the GHCN-H stations observations in the area
 \description{
 Download all GHCN-H stations data in area between two dates
 }
+\references{
+Menne, Matthew J.; Noone, Simon; Casey, Nancy W.; Dunn, Robert H.; McNeill, Shelley; Kantor, Diana; Thorne, Peter W.; Orcutt, Karen; Cunningham, Sam; Risavi, Nicholas. 2023. Global Historical Climatology Network-Hourly (GHCNh). NOAA National Centers for Environmental Information. \link{accessed on 2024/06/12}
+}