Heidt, E. U. (1978). Instructional media and the individual learner: A classification and systems appraisal (Rev. and enl. English ed.). Kagan Page.
Chicagoスタイル(17版)引用形式Heidt, Erhard U. Instructional Media and the Individual Learner: A Classification and Systems Appraisal. Rev. and enl. English ed. London: Kagan Page, 1978.
MLA(8版)引用形式Heidt, Erhard U. Instructional Media and the Individual Learner: A Classification and Systems Appraisal. Rev. and enl. English ed. Kagan Page, 1978.
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