Cita APA (7a ed.)
Lucas, S. (1989). The art of public speaking (3.vyd.). McGraw-Hill.
Cita Chicago Style (17a ed.)
Lucas, Stephen. The Art of Public Speaking. 3.vyd. New York: McGraw-Hill, 1989.
Cita MLA (9a ed.)
Lucas, Stephen. The Art of Public Speaking. 3.vyd. McGraw-Hill, 1989.
Precaución: Estas citas no son 100% exactas.