Não informado. Western journal of surgery, obstetrics and gynecology. Seattle Surgical Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Western Journal of Surgery, Obstetrics and Gynecology. Portland, Ore: Seattle Surgical Society.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Western Journal of Surgery, Obstetrics and Gynecology. Seattle Surgical Society.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.