Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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