APA aipamena

Ostroff, R. A. (1930). DUODENAL ULCER—ITS SURGICAL TREATMENT.

Chicago Style aipamena

Ostroff, Robert A. DUODENAL ULCER—ITS SURGICAL TREATMENT. 1930.

MLA aipamena

Ostroff, Robert A. DUODENAL ULCER—ITS SURGICAL TREATMENT. 1930.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.