Não informado. (1978). The Journal for Vocational Special Needs Education. National Association of Vocational Education Special Needs Personnel.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. The Journal for Vocational Special Needs Education. Denton, Tex: National Association of Vocational Education Special Needs Personnel, 1978.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. The Journal for Vocational Special Needs Education. National Association of Vocational Education Special Needs Personnel, 1978.
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