Arora, S. (1985). Fundamentals of Environmental Biology. Kalyani.
Cita Chicago (17th ed.)Arora, S. Fundamentals of Environmental Biology. New Delhi: Kalyani, 1985.
Cita MLA (9th ed.)Arora, S. Fundamentals of Environmental Biology. Kalyani, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.