Cita APA (7a ed.)

Cunningham, W. P., & Cunningham, M. A. (2002). Principles of Environmental Science: Inquiry and Applications. Tata McGraw-Hill Publishing Company Limited.

Cita Chicago Style (17a ed.)

Cunningham, William P., y Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. New Delhi: Tata McGraw-Hill Publishing Company Limited, 2002.

Cita MLA (9a ed.)

Cunningham, William P., y Mary Ann Cunningham. Principles of Environmental Science: Inquiry and Applications. Tata McGraw-Hill Publishing Company Limited, 2002.