Theodore, M. K., & Theodore, L. (1996). Major environmental issues facing the 21st century. Prentice Hall.
Citazione stile Chigago Style (17a edizione)Theodore, Mary K., e Louis Theodore. Major Environmental Issues Facing the 21st Century. Upper Saddle River, NJ: Prentice Hall, 1996.
Citatione MLA (8a ed.)Theodore, Mary K., e Louis Theodore. Major Environmental Issues Facing the 21st Century. Prentice Hall, 1996.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.