APA (7th ed.) Zitazioa
Lall, M., & Shikha Sahai. (2008). Fundamentals of environmental studies (2nd ed.). Excel Books.
Chicago Style (17th ed.) Zitazioa
Lall, Madhurima, eta Shikha Sahai. Fundamentals of Environmental Studies. 2nd ed. New Delhi: Excel Books, 2008.
MLA (9th ed.) Zitazioa
Lall, Madhurima, eta Shikha Sahai. Fundamentals of Environmental Studies. 2nd ed. Excel Books, 2008.
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