Styl cytowania APA

Kumar,, A., Bohra, C., & Singh, L. (2003). Environment, Pollution and management (1.). A.P.H..

Styl cytowania Chicago

Kumar,, A., C. Bohra, i L.K Singh. Environment, Pollution and Management. 1. New Delhi: A.P.H., 2003.

Styl cytowania MLA

Kumar,, A., et al. Environment, Pollution and Management. 1. A.P.H., 2003.