Cita APA (7a ed.)
Cunningham, W., & Cunningham, M. A. (2004). Principles of environmental science: Enquiry and applications (2nd ed.). Tata McGraw-Hill.
Cita Chicago Style (17a ed.)
Cunningham, William, y Mary Ann Cunningham. Principles of Environmental Science: Enquiry and Applications. 2nd ed. New Delhi: Tata McGraw-Hill, 2004.
Cita MLA (9a ed.)
Cunningham, William, y Mary Ann Cunningham. Principles of Environmental Science: Enquiry and Applications. 2nd ed. Tata McGraw-Hill, 2004.
Precaución: Estas citas no son 100% exactas.