Gregory, H. (2010). Public speaking for college and career. McGraw-Hill.
Chicago Style aipamenaGregory, Hamilton. Public Speaking for College and Career. McGraw-Hill, 2010.
MLA aipamenaGregory, Hamilton. Public Speaking for College and Career. McGraw-Hill, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.