Lua APA (7ú heag.)
Egan, G. (1982). The skilled helper: Model, skills, and methods for effective helping (2nd ed.). Brooks / Cole.
Lua i Stíl Chicago (17ú heag.)
Egan, Gerard. The Skilled Helper: Model, Skills, and Methods for Effective Helping. 2nd ed. California: Brooks / Cole, 1982.
Lua MLA (9ú heag.)
Egan, Gerard. The Skilled Helper: Model, Skills, and Methods for Effective Helping. 2nd ed. Brooks / Cole, 1982.
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