Cita APA (7a ed.)

Cunningham, W. P., Cunningham , M. A., & Saigo , B. (2005). Environmental science: A global concern (8th ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Cunningham, William P., Mary Ann Cunningham , y Barbara Saigo. Environmental Science: A Global Concern. 8th ed. Boston: McGraw-Hill, 2005.

Cita MLA (9a ed.)

Cunningham, William P., et al. Environmental Science: A Global Concern. 8th ed. McGraw-Hill, 2005.