Madden, R., Carlson, T., & Yarborough, B. H. (1965). Sound and sense in spelling (Workbook ed.). Harcourt, Brace & World, Inc.
Lua i Stíl Chicago (17ú heag.)Madden, Richard, Thorsten Carlson, agus Betty H. Yarborough. Sound and Sense in Spelling. Workbook ed. New York ; Chicago [etc]: Harcourt, Brace & World, Inc, 1965.
Lua MLA (8ú heag.)Madden, Richard, et al. Sound and Sense in Spelling. Workbook ed. Harcourt, Brace & World, Inc, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.