Cita APA (7a ed.)

Sage Publications, Beverly Hills, Calif.; London, & Sage Publications. (1977). Sage focus editions. Sage Publications.

Cita Chicago Style (17a ed.)

Sage Publications, Beverly Hills, Calif.; London, y Sage Publications. Sage Focus Editions. Thousand Oaks, Calif: Sage Publications, 1977.

Cita MLA (8a ed.)

Sage Publications, Beverly Hills, Calif.; London, y Sage Publications. Sage Focus Editions. Sage Publications, 1977.