Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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