Ferris, F. K., Keener, E. E., & Giddings, A. F. (1944). Learning essential English: [Grade] 3-8. Laidlaw.
Lua i Stíl Chicago (17ú heag.)Ferris, Florence K., Edward Ernest Keener, agus Arthur F. Giddings. Learning Essential English: [Grade] 3-8. Chicago ; New York [etc.]: Laidlaw, 1944.
Lua MLA (8ú heag.)Ferris, Florence K., et al. Learning Essential English: [Grade] 3-8. Laidlaw, 1944.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.