Cita APA (7a ed.)
Gardner, G., Prugh, T., Renner, M., & Mastny, L. (2015). State of the world 2015: Confronting hidden threats to sustainability. Island Press.
Cita Chicago Style (17a ed.)
Gardner, G., Tom Prugh, Michael Renner, y Lisa Mastny. State of the World 2015: Confronting Hidden Threats to Sustainability. Washington, District of Columbia: Island Press, 2015.
Cita MLA (9a ed.)
Gardner, G., et al. State of the World 2015: Confronting Hidden Threats to Sustainability. Island Press, 2015.
Precaución: Estas citas no son 100% exactas.