Citazione Stile APA (7a Edizione)

Griffin, C. L. (2015). Invitation to public speaking (5e.). Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Griffin, Cindy L. Invitation to Public Speaking. 5e. Stamford, [Connecticut]: Cengage Learning, 2015.

Citatione MLA (9a ed.)

Griffin, Cindy L. Invitation to Public Speaking. 5e. Cengage Learning, 2015.