Cita APA (7a ed.)

Hughes, J. D. (2009). An environmental history of the world: Humankind's changing role in the community of life (2nd ed.). Routledge.

Cita Chicago Style (17a ed.)

Hughes, J. Donald. An Environmental History of the World: Humankind's Changing Role in the Community of Life. 2nd ed. London: Routledge, 2009.

Cita MLA (8a ed.)

Hughes, J. Donald. An Environmental History of the World: Humankind's Changing Role in the Community of Life. 2nd ed. Routledge, 2009.