APA aipamena

Capper, W. M., & Butler, T. J. (1964). Surgery for Peptic Ulcer.

Chicago Style aipamena

Capper, W. M., and T. J. Butler. Surgery for Peptic Ulcer. 1964.

MLA aipamena

Capper, W. M., and T. J. Butler. Surgery for Peptic Ulcer. 1964.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.