APA aipamena

Pildal, J., Chan, A., Hróbjartsson, A., Forfang, E., Altman, D. G., & Gøtzsche, P. C. (2005). Comparison of descriptions of allocation concealment in trial protocols and the published reports: Cohort study. BMJ Publishing Group Ltd.

Chicago Style aipamena

Pildal, Julie, An-Wen Chan, Asbjørn Hróbjartsson, Elisabeth Forfang, Douglas G. Altman, and Peter C. Gøtzsche. Comparison of Descriptions of Allocation Concealment in Trial Protocols and the Published Reports: Cohort Study. BMJ Publishing Group Ltd, 2005.

MLA aipamena

Pildal, Julie, et al. Comparison of Descriptions of Allocation Concealment in Trial Protocols and the Published Reports: Cohort Study. BMJ Publishing Group Ltd, 2005.