APA aipamena

Lucas, S. (2020). The art of public speaking (Thirteenth edition.). McGraw-Hill Education.

Chicago Style aipamena

Lucas, Stephen. The Art of Public Speaking. Thirteenth edition. New York, NY: McGraw-Hill Education, 2020.

MLA aipamena

Lucas, Stephen. The Art of Public Speaking. Thirteenth edition. McGraw-Hill Education, 2020.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.