APA aipamena

Cunningham, F. G. (2006). Obstetricia de Williams.

Chicago Style aipamena

Cunningham, F. Gary. Obstetricia De Williams. 2006.

MLA aipamena

Cunningham, F. Gary. Obstetricia De Williams. 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.