Tom, T. (2003). Environmental and natural Resource (1st edition.). Pearson.
Citazione stile Chigago Style (17a edizione)Tom, Tietenberg. Environmental and Natural Resource. 1st edition. New Delhi: Pearson, 2003.
Citatione MLA (9a ed.)Tom, Tietenberg. Environmental and Natural Resource. 1st edition. Pearson, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.