Egan, G. (1990). Exercises in helping skills: A training manual to accompany the skilled helper (4th ed.). Brooks/Cole.
芝加哥风格引文Egan, Gerard. Exercises in Helping Skills: A Training Manual to Accompany the Skilled Helper. 4th ed. Monterey: Brooks/Cole, 1990.
MLA引文Egan, Gerard. Exercises in Helping Skills: A Training Manual to Accompany the Skilled Helper. 4th ed. Brooks/Cole, 1990.
警告：这些引文格式不一定是100％准确.