Kotler, P., & Roberto, N. (1989). Social marketing: Strategies for changing public behavior. Free Press Collier Macmillan.
Cita Chicago (17th ed.)Kotler, Philip, i Ned Roberto. Social Marketing: Strategies for Changing Public Behavior. New York, London: Free Press Collier Macmillan, 1989.
Cita MLA (9th ed.)Kotler, Philip, i Ned Roberto. Social Marketing: Strategies for Changing Public Behavior. Free Press Collier Macmillan, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.