Cita APA (7a ed.)

Cunningham, W. P. (2005). Environmental science: A global concern. McGraw-Hill.

Cita Chicago Style (17a ed.)

Cunningham, William P. Environmental Science: A Global Concern. Boston: McGraw-Hill, 2005.

Cita MLA (9a ed.)

Cunningham, William P. Environmental Science: A Global Concern. McGraw-Hill, 2005.