Goldstein, L. S., & Gotkin, L. G. (1962). A review of research: Teaching machines vs. programmed textbooks as presentation modes. Center for Programed Instruction.
Παραπομπή σε μορφή Chicago (17η εκδ.)Goldstein, Leo S., και Lassar G. Gotkin. A Review of Research: Teaching Machines Vs. Programmed Textbooks as Presentation Modes. N.Y.: Center for Programed Instruction, 1962.
Παραπομπή σε μορφή MLA (8th εκδ.)Goldstein, Leo S., και Lassar G. Gotkin. A Review of Research: Teaching Machines Vs. Programmed Textbooks as Presentation Modes. Center for Programed Instruction, 1962.
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