Ulloa Brenes, G. (2021). Reflections on the historical evolution of the concept of distance education.
シカゴスタイル引用形Ulloa Brenes, Gilbert. Reflections On the Historical Evolution of the Concept of Distance Education. 2021.
MLA引用形式Ulloa Brenes, Gilbert. Reflections On the Historical Evolution of the Concept of Distance Education. 2021.
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