توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Roberts, A. C., & Draper, E. M. (1927). The high school principal as administrator, supervisor, and director of extracurricular activities. D. C. Heath and Company.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Roberts, Alexander Crippen, و Edgar Marian Draper. The High School Principal as Administrator, Supervisor, and Director of Extracurricular Activities. Boston: D. C. Heath and Company, 1927.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Roberts, Alexander Crippen, و Edgar Marian Draper. The High School Principal as Administrator, Supervisor, and Director of Extracurricular Activities. D. C. Heath and Company, 1927.