Cita APA (7a ed.)

Francis, R. A., & Chadwick, M. A. (2013). Urban ecosystems: Understanding the human environment. Routledge.

Cita Chicago Style (17a ed.)

Francis, Robert A., y Michael A. Chadwick. Urban Ecosystems: Understanding the Human Environment. New York: Routledge, 2013.

Cita MLA (9a ed.)

Francis, Robert A., y Michael A. Chadwick. Urban Ecosystems: Understanding the Human Environment. Routledge, 2013.