توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Cook, J., Hislop, J., Altman, D., Briggs, A., Fayers, P., Norrie, J., . . . Vale, L. (2014). Use of methods for specifying the target difference in randomised controlled trial sample size calculations: Two surveys of trialists' practice. SAGE Publications.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Cook, J., J. Hislop, D. Altman, A. Briggs, P. Fayers, J. Norrie, C. Ramsay, I. Harvey, و L. Vale. Use of Methods for Specifying the Target Difference in Randomised Controlled Trial Sample Size Calculations: Two Surveys of Trialists' Practice. SAGE Publications, 2014.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Cook, J., et al. Use of Methods for Specifying the Target Difference in Randomised Controlled Trial Sample Size Calculations: Two Surveys of Trialists' Practice. SAGE Publications, 2014.