Verderber, R. F. (1984). Communicate (4th ed.). Wadsworth.
Lua i Stíl Chicago (17ú heag.)Verderber, Rudolph F. Communicate. 4th ed. Belmont: Wadsworth, 1984.
Lua MLA (9ú heag.)Verderber, Rudolph F. Communicate. 4th ed. Wadsworth, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.