Egan, G. (1982). Exercises in helping skills: A training manual to accompany the skilled helper (2nd ed.). Brooks/Cole.
Citace podle Chicago (17th ed.)Egan, Gerard. Exercises in Helping Skills: A Training Manual to Accompany the Skilled Helper. 2nd ed. Monterey: Brooks/Cole, 1982.
Citace podle MLA (9th ed.)Egan, Gerard. Exercises in Helping Skills: A Training Manual to Accompany the Skilled Helper. 2nd ed. Brooks/Cole, 1982.
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