Vernon, M. D. (1971). Reading and its difficulties: A psychological study. C.U.pr..
Tohutoru Kātū Chicago (17th ed.)Vernon, M. D. Reading and Its Difficulties: A Psychological Study. Cambridge: C.U.pr., 1971.
Tohutoro MLA (9th ed.)Vernon, M. D. Reading and Its Difficulties: A Psychological Study. C.U.pr., 1971.
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