Cita APA (7a ed.)

Groeschel, B. J. (1987). Stumbling blocks or stepping stones: Spiritual answers to psychological questions. Paulist Press.

Cita Chicago Style (17a ed.)

Groeschel, Benedict J. Stumbling Blocks or Stepping Stones: Spiritual Answers to Psychological Questions. New York: Paulist Press, 1987.

Cita MLA (9a ed.)

Groeschel, Benedict J. Stumbling Blocks or Stepping Stones: Spiritual Answers to Psychological Questions. Paulist Press, 1987.