citHeader("To cite package 'ltm' in publications use:")

citEntry(entry = "Manual",
         title = "ltm: Latent Trait Models under IRT",
         author = personList(as.person("D. Rizopoulos")),
         year         = 2005,
         note         = "R package version 0.4-0",
         url          = "http://www.student.kuleuven.be/~m0390867/dimitris.htm",
         
         textVersion = 
         paste("Rizopoulos, D. (2005)", 
               "'ltm: Latent Trait Models under IRT'.",
               "R package version 0.4-0.")
)