Heilman, A. W. (1972). Principles and practices of teaching reading (3d ed.). Merrill.
Lua i Stíl Chicago (17ú heag.)Heilman, Arthur W. Principles and Practices of Teaching Reading. 3d ed. Columbus, Ohio: Merrill, 1972.
Lua MLA (8ú heag.)Heilman, Arthur W. Principles and Practices of Teaching Reading. 3d ed. Merrill, 1972.
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