Pitchaiah, P. S. (1991). Water ecology pollution and management. Chugh Publications.
Style de citation Chicago (17e éd.)Pitchaiah, P. Sankara. Water Ecology Pollution and Management. Allahabad: Chugh Publications, 1991.
Style de citation MLA (9e éd.)Pitchaiah, P. Sankara. Water Ecology Pollution and Management. Chugh Publications, 1991.
Attention : ces citations peuvent ne pas être correctes à 100%.