citHeader("When citing cdlTools, please cite both the package and underlying data sources used:")


bibentry(
   bibtype = "Manual",
   title = "National Agricultural Statistics Service Cropland Data Layer",
   author = as.person( "USDA-NASS [aut]" ),
   year = "2024",
   note = "R package version 1.3-4",
   url = "https://nassgeodata.gmu.edu/CropScape/",
   textVersion = 
     paste("USDA-NASS. (2024) National Agricultural Statistics Service Cropland Data Layer. https://nassgeodata.gmu.edu/CropScape/"),
   key = "cdl-site"
 )

bibentry(
 bibtype = "Manual",
 title = "Tools to Download and Work with USDA Cropscape Data",
 author = c(
    person("Jonathan", "Lisic", email = "jlisic@gmail.com", role = "cre"),
    person("Lu", "Chen", role = "aut"),
    person("Jemma","Stachelek", email = "stachel2@msu.edu", role="ctb")
 ),
 year = "2024",
 note = "R package version 1.13",
 url = "https://cran.r-project.org/package=cdlTools",
 textVersion = 
     paste("Chen, L., Lisic, J., Stachelek, J. (2024). Tools to Download and Work with USDA Cropscape Data. R package version 0.14. https://cran.r-project.org/package=cdlTools"),
 key = "cdlTools-package"
)