Cita APA (7th ed.)
Ferguson, S. D. (2000). Researching the public opinion environment. Sage.
Cita Chicago (17th ed.)
Ferguson, Sherry Devereaux. Researching the Public Opinion Environment. London: Sage, 2000.
Cita MLA (9th ed.)
Ferguson, Sherry Devereaux. Researching the Public Opinion Environment. Sage, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.