Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

Elkington, John, et al. The Power of Unreasonable People: How Social Entrepreneurs Create Markets That Change the World. Harvard Business School Press, 2008.