Citazione Stile APA (7a Edizione)

Lucas, S. (2015). The art of public speaking (Twelfth edition.). McGraw-Hill Education.

Citazione stile Chigago Style (17a edizione)

Lucas, Stephen. The Art of Public Speaking. Twelfth edition. New York, NY: McGraw-Hill Education, 2015.

Citatione MLA (9a ed.)

Lucas, Stephen. The Art of Public Speaking. Twelfth edition. McGraw-Hill Education, 2015.