Gregory, H. (2005). Public Speaking for College & Career (7th edición.). McGraw-Hill Companies, Inc.
Citazione stile Chigago Style (17a edizione)Gregory, Hamilton. Public Speaking for College & Career. 7th edición. New York, N.Y: McGraw-Hill Companies, Inc, 2005.
Citatione MLA (9a ed.)Gregory, Hamilton. Public Speaking for College & Career. 7th edición. McGraw-Hill Companies, Inc, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.