Egan, G. (1975). The skilled helper: A model for systematic helping and interpersonal relating. Brooks / Cole.
Chicago-čujuhus (17. p.)Egan, Gerard. The Skilled Helper: A Model for Systematic Helping and Interpersonal Relating. California: Brooks / Cole, 1975.
MLA-čujuhus (9. p.)Egan, Gerard. The Skilled Helper: A Model for Systematic Helping and Interpersonal Relating. Brooks / Cole, 1975.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.