Kaushik, A., & Kaushik, C. P. (2014). Perspectives in environmental studies (4th ed.). New Age.
Citazione stile Chigago Style (17a edizione)Kaushik, Anubha, e C. P. Kaushik. Perspectives in Environmental Studies. 4th ed. New Delhi: New Age, 2014.
Citatione MLA (9a ed.)Kaushik, Anubha, e C. P. Kaushik. Perspectives in Environmental Studies. 4th ed. New Age, 2014.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.