Cita APA (7th ed.)

Griffin, C. L. (2015). Invitation to public speaking (Fourth edition.). Wadsworth Cengage Learning.

Cita Chicago (17th ed.)

Griffin, Cindy L. Invitation to Public Speaking. Fourth edition. Stamford, [Connecticut]: Wadsworth Cengage Learning, 2015.

Cita MLA (9th ed.)

Griffin, Cindy L. Invitation to Public Speaking. Fourth edition. Wadsworth Cengage Learning, 2015.