Cita APA

Rothwell, P. (2006). Factors that can affect the external validity of randomised controlled trials.

Citación estilo Chicago

Rothwell, P. Factors That Can Affect the External Validity of Randomised Controlled Trials. 2006.

Cita MLA

Rothwell, P. Factors That Can Affect the External Validity of Randomised Controlled Trials. 2006.

Warning: These citations may not always be 100% accurate.