Lucas, S. (2020). The art of public speaking (Thirteenth edition.). McGraw-Hill Education.
Chicago Style (17. basım) AtıfLucas, Stephen. The Art of Public Speaking. Thirteenth edition. New York, NY: McGraw-Hill Education, 2020.
MLA (9th ed.) AtıfLucas, Stephen. The Art of Public Speaking. Thirteenth edition. McGraw-Hill Education, 2020.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..