APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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