Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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