Doll, R., & Peto, R. (1980). Randomised controlled trials and retrospective controls.
芝加哥风格引文Doll, R., 与 R. Peto. Randomised Controlled Trials and Retrospective Controls. 1980.
MLA引文Doll, R., 与 R. Peto. Randomised Controlled Trials and Retrospective Controls. 1980.
警告：这些引文格式不一定是100％准确.