Não informado. (1961). Counselor Education and Supervision. American Association for Counseling and Development.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Counselor Education and Supervision. Alexandria, Va: American Association for Counseling and Development, 1961.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Counselor Education and Supervision. American Association for Counseling and Development, 1961.
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