Cita APA (7a ed.)

Andreasen, A. R. (2006). Social marketing in the 21st century. SAGE Publications.

Cita Chicago Style (17a ed.)

Andreasen, Alan R. Social Marketing in the 21st Century. Thousand Oaks, Calif.: SAGE Publications, 2006.

Cita MLA (8a ed.)

Andreasen, Alan R. Social Marketing in the 21st Century. SAGE Publications, 2006.