Egan, G. (1990). The skilled helper: A systematic approach to effective helping (Fourth edition.). Brooks/Cole Publishing Company.
Chicagoスタイル(17版)引用形式Egan, Gerard. The Skilled Helper: A Systematic Approach to Effective Helping. Fourth edition. Pacific Grove, California: Brooks/Cole Publishing Company, 1990.
MLA(9版)引用形式Egan, Gerard. The Skilled Helper: A Systematic Approach to Effective Helping. Fourth edition. Brooks/Cole Publishing Company, 1990.
警告: この引用は必ずしも正確ではありません.