APA (7th ed.) Zitazioa

Kumar, H. (1998). Environmental pollution and waste management. M.D..

Chicago Style (17th ed.) Zitazioa

Kumar, H.D. Environmental Pollution and Waste Management. New Delhi: M.D., 1998.

MLA (9th ed.) Zitazioa

Kumar, H.D. Environmental Pollution and Waste Management. M.D., 1998.