Gibbs, D. (1909). Elementary English grammar and composition. American Book.
Lua i Stíl Chicago (17ú heag.)Gibbs, David. Elementary English Grammar and Composition. New York: American Book, 1909.
Lua MLA (9ú heag.)Gibbs, David. Elementary English Grammar and Composition. American Book, 1909.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.