Behara ,H.P. (2009). Envirement Management. Himalaya.
Cita Chicago (17th ed.)Behara ,H.P. Envirement Management. Himalaya, 2009.
Cita MLA (9th ed.)Behara ,H.P. Envirement Management. Himalaya, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.