APA (7e ed.) Bronvermelding

Pitchaiah, P. S. (1991). Water ecology pollution and management. Chugh Publications.

Chicago (17e ed.) Bronvermelding

Pitchaiah, P. Sankara. Water Ecology Pollution and Management. Allahabad: Chugh Publications, 1991.

MLA (9e ed.) Bronvermelding

Pitchaiah, P. Sankara. Water Ecology Pollution and Management. Chugh Publications, 1991.

Let op: Deze citaties zijn niet altijd 100% accuraat.