MLA

Kendel, Friederike, and R Hetzer. Gender and Recovery From Coronary Artery Bypass Surgery. Steinkopff, 2009.

APA

Kendel, F., & Hetzer, R. (2009). Gender and Recovery from Coronary Artery Bypass Surgery. Steinkopff.

Chicago

Kendel, Friederike, and R Hetzer. Gender and Recovery From Coronary Artery Bypass Surgery. : Steinkopff, 2009.