APA引文

Heller, L. (1981). Emergencies in ginecology and obstretrics. Year Book Medical.

Chicago Style (17th ed.) Citation

Heller, Luz. Emergencies in Ginecology and Obstretrics. Year Book Medical, 1981.

MLA引文

Heller, Luz. Emergencies in Ginecology and Obstretrics. Year Book Medical, 1981.

警告：這些引文格式不一定是100％准確.