توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Library of Congress. Classification Division & Perley, C. W. (1927). Classification: Class B, part II, BL-BX: Religion. Printed as manuscript. U.S. Govt. print. off..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Library of Congress. Classification Division و Clarence Warner Perley. Classification: Class B, Part II, BL-BX: Religion. Printed as Manuscript. Washington: U.S. Govt. print. off., 1927.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Library of Congress. Classification Division و Clarence Warner Perley. Classification: Class B, Part II, BL-BX: Religion. Printed as Manuscript. U.S. Govt. print. off., 1927.