Παραπομπή σε μορφή APA (7η εκδ.)

Sakala, E. P. (2006). High-yield obstetrics and gynecology (2nd edition.). Lippincott Williams and Wilkins.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sakala, Elmar P. High-yield Obstetrics and Gynecology. 2nd edition. Philadelphia: Lippincott Williams and Wilkins, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Sakala, Elmar P. High-yield Obstetrics and Gynecology. 2nd edition. Lippincott Williams and Wilkins, 2006.