توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Mullin, R. P. (2007). The soul of classical American philosophy: The ethical and spiritual insights of William James, Josiah Royce, and Charles Sanders Peirce. State University of New York Press.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Mullin, Richard P. The Soul of Classical American Philosophy: The Ethical and Spiritual Insights of William James, Josiah Royce, and Charles Sanders Peirce. Albany: State University of New York Press, 2007.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Mullin, Richard P. The Soul of Classical American Philosophy: The Ethical and Spiritual Insights of William James, Josiah Royce, and Charles Sanders Peirce. State University of New York Press, 2007.