APA-Zitierstil (7. Ausg.)

Egan, G. (1990). Exercises in helping skills: A training manual to accompany the skilled helper (4th ed.). Brooks/Cole.

Chicago-Zitierstil (17. Ausg.)

Egan, Gerard. Exercises in Helping Skills: A Training Manual to Accompany the Skilled Helper. 4th ed. Monterey: Brooks/Cole, 1990.

MLA-Zitierstil (9. Ausg.)

Egan, Gerard. Exercises in Helping Skills: A Training Manual to Accompany the Skilled Helper. 4th ed. Brooks/Cole, 1990.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.