APA引文

Eastman. (1961). Williams obstetrics. Appleton Century-crofts.

Chicago Style (17th ed.) Citation

Eastman. Williams Obstetrics. Appleton Century-crofts, 1961.

MLA引文

Eastman. Williams Obstetrics. Appleton Century-crofts, 1961.

警告：這些引文格式不一定是100％准確.