Cowan, G., McPherson, E. j. a., & Leggett, G. j. a. (1966). Plain english please. Random House.
Lua i Stíl Chicago (17ú heag.)Cowan, Gregory, Elisabeth joint author McPherson, agus Glenn joint author Leggett. Plain English Please. New York: Random House, 1966.
Lua MLA (9ú heag.)Cowan, Gregory, et al. Plain English Please. Random House, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.