Não informado. (1966). Education and Training of the Mentally Retarded. Council for Exceptional Children, Division on Mental Retardation.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Education and Training of the Mentally Retarded. Reston, Va: Council for Exceptional Children, Division on Mental Retardation, 1966.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Education and Training of the Mentally Retarded. Council for Exceptional Children, Division on Mental Retardation, 1966.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.