APA Alıntı

Egan, G. (1990). The skilled helper: A systematic approach to effective helping (4th edition.). Pacific Grove, California: Brooks/Cole Publishing Company.

Chicago Stili Alıntı

Egan, Gerard. The Skilled Helper: A Systematic Approach to Effective Helping. 4th edition. Pacific Grove, California: Brooks/Cole Publishing Company, 1990.

MLA Alıntı

Egan, Gerard. The Skilled Helper: A Systematic Approach to Effective Helping. 4th edition. Pacific Grove, California: Brooks/Cole Publishing Company, 1990.