Cita APA (7th ed.)
Torrell, J., & Royal, R. (2003). Spiritual master. Catholic University of America Press.
Cita Chicago (17th ed.)
Torrell, Jean-Pierre, i Robert Royal. Spiritual Master. Washington, D.C.: Catholic University of America Press, 2003.
Cita MLA (9th ed.)
Torrell, Jean-Pierre, i Robert Royal. Spiritual Master. Catholic University of America Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.