APA aipamena

Massachusetts Medical Society. Journal watch: J. watch, Gastroenterol. (Online). [Waltham, Mass.]: Massachusetts Medical Society.

Chicago Style aipamena

Massachusetts Medical Society. Journal Watch: J. Watch, Gastroenterol. (Online). [Waltham, Mass.]: Massachusetts Medical Society.

MLA aipamena

Massachusetts Medical Society. Journal Watch: J. Watch, Gastroenterol. (Online). [Waltham, Mass.]: Massachusetts Medical Society.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.