Patton, D. H., & Johnson, E. M. (1956). Spelling for word mastery: Clothbound and skilltext editions. C.E. Merrill.
Lua i Stíl Chicago (17ú heag.)Patton, David H., agus Eleanor M. Johnson. Spelling for Word Mastery: Clothbound and Skilltext Editions. Columbus, Ohio: C.E. Merrill, 1956.
Lua MLA (8ú heag.)Patton, David H., agus Eleanor M. Johnson. Spelling for Word Mastery: Clothbound and Skilltext Editions. C.E. Merrill, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.