Theodore, M. K., & Theodore, L. (1996). Major environmental issues facing the 21st century. Prentice Hall.
Citace podle Chicago (17th ed.)Theodore, Mary K., a Louis Theodore. Major Environmental Issues Facing the 21st Century. Upper Saddle River, NJ: Prentice Hall, 1996.
Citace podle MLA (8th ed.)Theodore, Mary K., a Louis Theodore. Major Environmental Issues Facing the 21st Century. Prentice Hall, 1996.
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