Lua APA (7ú heag.)

Verderber, R. F. (1982). The challenge of effective speaking (5th ed.). Wadsworth.

Lua i Stíl Chicago (17ú heag.)

Verderber, Rudolph F. The Challenge of Effective Speaking. 5th ed. Califonia: Wadsworth, 1982.

Lua MLA (9ú heag.)

Verderber, Rudolph F. The Challenge of Effective Speaking. 5th ed. Wadsworth, 1982.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.