Corbin, R. K., & Perrin, P. G. (1955). Guide to modern English. Scott, Foresman.
Lua i Stíl Chicago (17ú heag.)Corbin, Richard K., agus Porter Gale Perrin. Guide to Modern English. Chicago: Scott, Foresman, 1955.
Lua MLA (8ú heag.)Corbin, Richard K., agus Porter Gale Perrin. Guide to Modern English. Scott, Foresman, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.