APA (7th ed.) Citation

Theodore, M. K., & Theodore, L. (1996). Major environmental issues facing the 21st century. Prentice Hall.

Chicago Style (17th ed.) Citation

Theodore, Mary K., and Louis Theodore. Major Environmental Issues Facing the 21st Century. Upper Saddle River, NJ: Prentice Hall, 1996.

MLA (8th ed.) Citation

Theodore, Mary K., and Louis Theodore. Major Environmental Issues Facing the 21st Century. Prentice Hall, 1996.