citHeader("To cite PSAgraphics in publications use:")

citEntry(entry = "Article",
  title        = "{PSAgraphics}: An {R} Package to Support Propensity Score Analysis",
  author       = personList(as.person("James E. Helmreich"),
                   as.person("Robert M. Pruzek")),
  journal      = "Journal of Statistical Software",
  year         = "2009",
  volume       = "29",
  number       = "6",
  pages        = "1--23",
  url          = "https://www.jstatsoft.org/v29/i06/",

  textVersion  =
  paste("James E. Helmreich, Robert M. Pruzek (2009).",
        "PSAgraphics: An R Package to Support Propensity Score Analysis.",
        "Journal of Statistical Software 29(6), 1-23.",
        "URL https://www.jstatsoft.org/v29/i06/.",
        "We are grateful to KuangNan Xiong for significant 
        work on the functions new to version 2.0: 
        cstrata.psa, cv.bal.psa, and cv.trans.psa."
)
)

