Raj, G. (1987). Dictionary of environment. Anmol.
Cita Chicago (17th ed.)Raj, Gurdeep. Dictionary of Environment. New Delhi: Anmol, 1987.
Cita MLA (9th ed.)Raj, Gurdeep. Dictionary of Environment. Anmol, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.