APA aipamena

Cullen, S., & Chapman, R. (2003). Primary sclerosing cholangitis.

Chicago Style aipamena

Cullen, S., and R. Chapman. Primary Sclerosing Cholangitis. 2003.

MLA aipamena

Cullen, S., and R. Chapman. Primary Sclerosing Cholangitis. 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.