Egan, G. (1970). Encounter; group processes for interpersonal growth. Brooks/Cole Pub. Co..
Lua i Stíl Chicago (17ú heag.)Egan, Gerard. Encounter; Group Processes for Interpersonal Growth. Belmont, Calif.: Brooks/Cole Pub. Co., 1970.
Lua MLA (8ú heag.)Egan, Gerard. Encounter; Group Processes for Interpersonal Growth. Brooks/Cole Pub. Co., 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.