bibentry(
  bibtype = "Book",
  title   = "Stated Preference Methods Using R",
  author  = c(person("Hideo", "Aizaki"), 
              person("Tomoaki", "Nakatani"),
              person("Kazuo", "Sato")),
  year         = "2014",
  doi          = "10.1201/b17292",
  publisher    = "CRC Press")

bibentry(
  bibtype = "Manual",
  title   = "{support.BWS}: Basic Functions for Supporting an Implementation of Best-Worst Scaling",
  author  = "Hideo Aizaki",
  year    = "2019",
  note    = "R package version 0.2-1",
  url     = "https://CRAN.R-project.org/package=support.BWS")

