Griffin, C. L. (2015). Invitation to public speaking (5e.). Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Griffin, Cindy L. Invitation to Public Speaking. 5e. Stamford, [Connecticut]: Cengage Learning, 2015.
Lua MLA (9ú heag.)Griffin, Cindy L. Invitation to Public Speaking. 5e. Cengage Learning, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.