Não informado. (1997). Professional School Counseling. American School Counselor Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Professional School Counseling. Alexandria, Va: American School Counselor Association, 1997.
Lua MLA (8ú heag.)Não informado. Professional School Counseling. American School Counselor Association, 1997.
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