APA (7th ed.) Zitazioa
Gupta, P. J. (2010). A guide to hemorrhoidal disease. Nova Science Publishers.
Chicago Style (17th ed.) Zitazioa
Gupta, Pravin Jaiprakash. A Guide to Hemorrhoidal Disease. New York: Nova Science Publishers, 2010.
MLA (9th ed.) Zitazioa
Gupta, Pravin Jaiprakash. A Guide to Hemorrhoidal Disease. Nova Science Publishers, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.