citHeader("To cite the MASS package in publications use:") bibentry(bibtype = "Book", title = "Modern Applied Statistics with S", author = c(as.person("W. N. Venables"), as.person("B. D. Ripley")), publisher = "Springer", edition = "Fourth", address = "New York", year = 2002, note = "ISBN 0-387-95457-0", url = "https://www.stats.ox.ac.uk/pub/MASS4/", textVersion = paste("Venables, W. N. & Ripley, B. D. (2002)", "Modern Applied Statistics with S.", "Fourth Edition. Springer, New York. ISBN 0-387-95457-0") )