توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

National Conference on Parole Washington, D.C., & Bell, M. (1957). Parole in principle and practice. National Probation and Parole Association.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

National Conference on Parole Washington, D.C., و Marjorie Bell. Parole in Principle and Practice. New York: National Probation and Parole Association, 1957.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

National Conference on Parole Washington, D.C., و Marjorie Bell. Parole in Principle and Practice. National Probation and Parole Association, 1957.