Cita APA (7a ed.)
Gerlach, V. S., & Ely, D. P. (1971). Teaching and media: A systematic approach.
Cita estilo Chicago (17a ed.)
Gerlach, Vernon S., y Donald P. Ely. Teaching and Media: A Systematic Approach. 1971.
Cita MLA (9a ed.)
Gerlach, Vernon S., y Donald P. Ely. Teaching and Media: A Systematic Approach. 1971.
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