Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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