Citazione Stile APA (7a Edizione)

Gregory, H. (1999). Public speaking for college and career (5th.ed.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Gregory, Hamilton. Public Speaking for College and Career. 5th.ed. Boston: McGraw-Hill, 1999.

Citatione MLA (9a ed.)

Gregory, Hamilton. Public Speaking for College and Career. 5th.ed. McGraw-Hill, 1999.