Dyfyniad APA

Egan, G. (1990). The skilled helper: A systematic approach to effective helping (4th ed.). Brooks / Cole.

Dyfyniad Arddull Chicago

Egan, Gerard. The Skilled Helper: A Systematic Approach to Effective Helping. 4th ed. California: Brooks / Cole, 1990.

Dyfyniad MLA

Egan, Gerard. The Skilled Helper: A Systematic Approach to Effective Helping. 4th ed. Brooks / Cole, 1990.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.