Cita APA (7a ed.)

Worldwatch Institute, Assadourian, E., Prugh, T., & Starke, L. (2013). State of the world 2013: Is sustainability still possible? Island Press.

Cita Chicago Style (17a ed.)

Worldwatch Institute, Erik Assadourian, Thomas Prugh, y Linda Starke. State of the World 2013: Is Sustainability Still Possible? Washington, DC: Island Press, 2013.

Cita MLA (9a ed.)

Worldwatch Institute, et al. State of the World 2013: Is Sustainability Still Possible? Island Press, 2013.