Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1989). Current Opinion in Obstetrics and Gynecology. Rapid Science Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Current Opinion in Obstetrics and Gynecology. London: Rapid Science Publishers, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Current Opinion in Obstetrics and Gynecology. Rapid Science Publishers, 1989.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.