Rothkopf, E. Z., & Johnson, P. E. (1971). Verbal learning research and the technology of written instruction. Teachers College Press.
Citace podle Chicago (17th ed.)Rothkopf, Ernst Z., a Paul E. Johnson. Verbal Learning Research and the Technology of Written Instruction. Nueva York: Teachers College Press, 1971.
Citace podle MLA (9th ed.)Rothkopf, Ernst Z., a Paul E. Johnson. Verbal Learning Research and the Technology of Written Instruction. Teachers College Press, 1971.
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