APA Style

M., S, S., Gerhon, L. (1987). Anesthesia Obstetrics (2ndedtion). USA: Willams & Williams And Association.

MLA Style

M., Shnider, Sol., Gerhon, Levinson. "Anesthesia Obstetrics". 2ndedtion USA: Willams & Williams And Association, 1987. Text.