Lua APA (7ú heag.)
Verderber, R. F. (1988). The challenge of effective speaking (7th ed.). Wadsworth Pub. Co..
Lua i Stíl Chicago (17ú heag.)
Verderber, Rudolph F. The Challenge of Effective Speaking. 7th ed. Belmont, Calif.: Wadsworth Pub. Co., 1988.
Lua MLA (9ú heag.)
Verderber, Rudolph F. The Challenge of Effective Speaking. 7th ed. Wadsworth Pub. Co., 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.