APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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