APA citiranje

Ahmad, N., Boutron, I., Moher, D., Pitrou, I., Roy, C., & Ravaud, P. (2009). Neglected external validity in reports of randomized trials: The example of hip and knee osteoarthritis. Wiley-Liss, Inc.

Citação norma Chicago

Ahmad, Nizar, Isabelle Boutron, David Moher, Isabelle Pitrou, Carine Roy, and Philippe Ravaud. Neglected External Validity in Reports of Randomized Trials: The Example of Hip and Knee Osteoarthritis. Wiley-Liss, Inc, 2009.

MLA citiranje

Ahmad, Nizar, et al. Neglected External Validity in Reports of Randomized Trials: The Example of Hip and Knee Osteoarthritis. Wiley-Liss, Inc, 2009.