Christie, L. (1987). Unsung heroes: How to recruit and train volunteer youth workers. Zondervan.
Chicagoスタイル(17版)引用形式Christie, Les. Unsung Heroes: How to Recruit and Train Volunteer Youth Workers. Grand Rapids: Zondervan, 1987.
MLA(9版)引用形式Christie, Les. Unsung Heroes: How to Recruit and Train Volunteer Youth Workers. Zondervan, 1987.
警告: この引用は必ずしも正確ではありません.