Стиль цитування APA (7-ме видання)

Egan, G. (2010). The skilled helper: A problem-management and opportunity-development approach to helping (9th ed.). Brooks/Cole.

Чикаго стиль цитування (17-те видання)

Egan, Gerard. The Skilled Helper: A Problem-management and Opportunity-development Approach to Helping. 9th ed. Australia: Brooks/Cole, 2010.

Стиль цитування MLA (9-ме видання)

Egan, Gerard. The Skilled Helper: A Problem-management and Opportunity-development Approach to Helping. 9th ed. Brooks/Cole, 2010.