APA citiranje

Doll, R., & Peto, R. (1980). Randomised controlled trials and retrospective controls.

Chicago Style (17th ed.) Citation

Doll, R., and R. Peto. Randomised Controlled Trials and Retrospective Controls. 1980.

MLA citiranje

Doll, R., and R. Peto. Randomised Controlled Trials and Retrospective Controls. 1980.

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