Coleman, W. H., Donovan, H. L., Frasier, G. W., & Stoddard, A. J. (1931). Learning to spell. Hall & McCreary Company.
Lua i Stíl Chicago (17ú heag.)Coleman, William Henry, Herman Lee Donovan, George Willard Frasier, agus Alexander J. Stoddard. Learning to Spell. Chicago: Hall & McCreary Company, 1931.
Lua MLA (8ú heag.)Coleman, William Henry, et al. Learning to Spell. Hall & McCreary Company, 1931.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.