Cita APA (7a ed.)

Hartshorn, G. G. (1991). Audience research sourcebook. National Association of Broadcasters.

Cita Chicago Style (17a ed.)

Hartshorn, Gerald G. Audience Research Sourcebook. Washington: National Association of Broadcasters, 1991.

Cita MLA (9a ed.)

Hartshorn, Gerald G. Audience Research Sourcebook. National Association of Broadcasters, 1991.