APA Citatie

Cheng, Y., Macera, C. A., Davis, D. R., & Blair, S. N. (2000). Physical activity and peptic ulcers. Copyright 2000 BMJ publishing Group.

Chicago Style citaat

Cheng, Yiling, Caroline A. Macera, Dorothy R. Davis, en Steven N. Blair. Physical Activity and Peptic Ulcers. Copyright 2000 BMJ publishing Group, 2000.

MLA citatie

Cheng, Yiling, Caroline A. Macera, Dorothy R. Davis, en Steven N. Blair. Physical Activity and Peptic Ulcers. Copyright 2000 BMJ publishing Group, 2000.

Let op: Deze citaties zijn niet altijd 100% accuraat.