Cita APA (7a ed.)

Cunningham, W. P., & Saigo, B. W. (1990). Environmental science: A global concern. W. C. Brown.

Cita Chicago Style (17a ed.)

Cunningham, William P., y Barbara Woodworth Saigo. Environmental Science: A Global Concern. Dubuque, IA: W. C. Brown, 1990.

Cita MLA (9a ed.)

Cunningham, William P., y Barbara Woodworth Saigo. Environmental Science: A Global Concern. W. C. Brown, 1990.