Joseph, K. (2004). Essentials of environmental studies. Pearson Education.
Citazione stile Chigago Style (17a edizione)Joseph, Kurian. Essentials of Environmental Studies. Delhi: Pearson Education, 2004.
Citatione MLA (9a ed.)Joseph, Kurian. Essentials of Environmental Studies. Pearson Education, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.