Madden, R., Carlson, T. R., & Yarborough, B. H. (1967). Sound and sense in spelling (2d ed.). Harcourt, Brace & World.
Lua i Stíl Chicago (17ú heag.)Madden, Richard, Thorsten Robert Carlson, agus Betty Hathaway Yarborough. Sound and Sense in Spelling. 2d ed. New York: Harcourt, Brace & World, 1967.
Lua MLA (8ú heag.)Madden, Richard, et al. Sound and Sense in Spelling. 2d ed. Harcourt, Brace & World, 1967.
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