Cita APA (7a ed.)

Northrop, R. B., & Connor, A. N. (2013). Ecological sustainability: Understanding complex issues. CRC Press.

Cita Chicago Style (17a ed.)

Northrop, Robert B., y Anne N. Connor. Ecological Sustainability: Understanding Complex Issues. Boca Raton: CRC Press, 2013.

Cita MLA (8a ed.)

Northrop, Robert B., y Anne N. Connor. Ecological Sustainability: Understanding Complex Issues. CRC Press, 2013.