German, K. M., & Gronbeck, B. E. (2001). Principles of public speaking (14th ed.). Addison Wesley Longman.
Lua i Stíl Chicago (17ú heag.)German, Kathleen M., agus Bruce E. Gronbeck. Principles of Public Speaking. 14th ed. New York: Addison Wesley Longman, 2001.
Lua MLA (9ú heag.)German, Kathleen M., agus Bruce E. Gronbeck. Principles of Public Speaking. 14th ed. Addison Wesley Longman, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.