Gregory, H. (1999). Public speaking for college and career (5th.ed.). McGraw-Hill.
Citace podle Chicago (17th ed.)Gregory, Hamilton. Public Speaking for College and Career. 5th.ed. Boston: McGraw-Hill, 1999.
Citace podle MLA (9th ed.)Gregory, Hamilton. Public Speaking for College and Career. 5th.ed. McGraw-Hill, 1999.
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