Haywood, R. (1998). Public relations for marketing professionals. Mac Millan.
Chicago Style aipamenaHaywood, Roger. Public Relations for Marketing Professionals. New York: Mac Millan, 1998.
MLA aipamenaHaywood, Roger. Public Relations for Marketing Professionals. Mac Millan, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.