Cita APA

SpringerLink (Online service), & Worldwatch Institute. (2013). State of the World 2013: Is Sustainability Still Possible? (1st ed. 2013.). Washington, DC: Island Press/Center for Resource Economics : Imprint: Island Press.

Citación estilo Chicago

SpringerLink (Online service), y Worldwatch Institute. State of the World 2013: Is Sustainability Still Possible? 1st ed. 2013. Washington, DC: Island Press/Center for Resource Economics : Imprint: Island Press, 2013.

Cita MLA

SpringerLink (Online service), y Worldwatch Institute. State of the World 2013: Is Sustainability Still Possible? 1st ed. 2013. Washington, DC: Island Press/Center for Resource Economics : Imprint: Island Press, 2013.