Cita APA (7a ed.)

Elkington, J., & Hartigan, P. (2008). The power of unreasonable people: How social entrepeneurs create markets that change the world. Harvard Business School Press.

Cita Chicago Style (17a ed.)

Elkington, John, y Pamela Hartigan. The Power of Unreasonable People: How Social Entrepeneurs Create Markets That Change the World. Boston: Harvard Business School Press, 2008.

Cita MLA (9a ed.)

Elkington, John, y Pamela Hartigan. The Power of Unreasonable People: How Social Entrepeneurs Create Markets That Change the World. Harvard Business School Press, 2008.