National Education Association of the United States. Division of Audio-Visual Instructional Service. (1964). Selection and use of programmed materials: A handbook for teachers. s. n.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Education Association of the United States. Division of Audio-Visual Instructional Service. Selection and Use of Programmed Materials: A Handbook for Teachers. [Washington: s. n, 1964.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Education Association of the United States. Division of Audio-Visual Instructional Service. Selection and Use of Programmed Materials: A Handbook for Teachers. s. n, 1964.
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