Gaya APA

Hart, G, M. (1978). Values clarification for counselors : how counselors, social workers, psychologists and other human service workers can use available techniques . Illinois: Charles C. Thomas.

Gaya MLA

Hart, Gordon, M.. "Values clarification for counselors : how counselors, social workers, psychologists and other human service workers can use available techniques". Illinois: Charles C. Thomas, 1978. Text.