APA (7e ed.) Bronvermelding

Não informado. Western journal of surgery, obstetrics and gynecology. Seattle Surgical Society.

Chicago (17e ed.) Bronvermelding

Não informado. Western Journal of Surgery, Obstetrics and Gynecology. Portland, Ore: Seattle Surgical Society.

MLA (8e ed.) Bronvermelding

Não informado. Western Journal of Surgery, Obstetrics and Gynecology. Seattle Surgical Society.

Let op: Deze citaties zijn niet altijd 100% accuraat.