Bates, M., & Johnson, C. D. (1982). Group leadership: A manual for group counseling (2nd ed.). Love Publishers.
Lua i Stíl Chicago (17ú heag.)Bates, Marilyn, agus Clarence D. Johnson. Group Leadership: A Manual for Group Counseling. 2nd ed. London: Love Publishers, 1982.
Lua MLA (9ú heag.)Bates, Marilyn, agus Clarence D. Johnson. Group Leadership: A Manual for Group Counseling. 2nd ed. Love Publishers, 1982.
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