Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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

Attention : ces citations peuvent ne pas être correctes à 100%.