Cita APA

Cunningham, W. P., & Saigo, B. W. (1999). Environmental Science: A Global Concern (5th ed.). McGraw Hill.

Citación estilo Chicago

Cunningham, William P., and Barbara Woodworth Saigo. Environmental Science: A Global Concern. 5th ed. Boston: McGraw Hill, 1999.

Cita MLA

Cunningham, William P., and Barbara Woodworth Saigo. Environmental Science: A Global Concern. 5th ed. McGraw Hill, 1999.