Cita APA (7th ed.)
Lall, M., & Shikha Sahai. (2008). Fundamentals of environmental studies (2nd ed.). Excel Books.
Cita Chicago (17th ed.)
Lall, Madhurima, i Shikha Sahai. Fundamentals of Environmental Studies. 2nd ed. New Delhi: Excel Books, 2008.
Cita MLA (9th ed.)
Lall, Madhurima, i Shikha Sahai. Fundamentals of Environmental Studies. 2nd ed. Excel Books, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.