Cita APA (7a ed.)

Christie, L. (1987). Unsung heroes: How to recruit and train volunteer youth workers. Zondervan.

Cita Chicago Style (17a ed.)

Christie, Les. Unsung Heroes: How to Recruit and Train Volunteer Youth Workers. Grand Rapids: Zondervan, 1987.

Cita MLA (9a ed.)

Christie, Les. Unsung Heroes: How to Recruit and Train Volunteer Youth Workers. Zondervan, 1987.