Virtual colonoscopy
  MLA
  Lefere, Philippe, et al. Virtual Colonoscopy. Bethesda, MD: Springer Berlin Heidelberg, 2006.
  APA
  Lefere, P., Booya, F., Gryspeerdt, S., Gryspeerdt, S., & Baert, A. L. (2006). Virtual colonoscopy. Bethesda, MD: Springer Berlin Heidelberg.
  Chicago
  Lefere, Philippe, Fargol Booya, Stefaan Gryspeerdt, S  Gryspeerdt, A. L Baert, and A. L Baert. Virtual Colonoscopy. Bethesda, MD: Springer Berlin Heidelberg, 2006.