Jackson, E. N. (1969). Group counseling: Dynamic possibilities of small groups. Pilgrim.
Lua i Stíl Chicago (17ú heag.)Jackson, Edgar N. Group Counseling: Dynamic Possibilities of Small Groups. Philadelphia: Pilgrim, 1969.
Lua MLA (9ú heag.)Jackson, Edgar N. Group Counseling: Dynamic Possibilities of Small Groups. Pilgrim, 1969.
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