Powdermaker, F., & Frank, J. D. (1953). Group psychotherapy: Studies in methodology of research and therapy. Published for the Commonwealth Fund by the Harvard University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Powdermaker, Florence, و Jerome D. Frank. Group Psychotherapy: Studies in Methodology of Research and Therapy. Cambridge, MA: Published for the Commonwealth Fund by the Harvard University Press, 1953.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Powdermaker, Florence, و Jerome D. Frank. Group Psychotherapy: Studies in Methodology of Research and Therapy. Published for the Commonwealth Fund by the Harvard University Press, 1953.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.