Cita APA (7a ed.)

Sage Publications. (1980). The Sage commtext series. Sage.

Cita Chicago Style (17a ed.)

Sage Publications. The Sage Commtext Series. Beverly Hills, Calif. [u.a.]: Sage, 1980.

Cita MLA (9a ed.)

Sage Publications. The Sage Commtext Series. Sage, 1980.