APA citiranje

Singh,R.P, & Zubairul Islam. (2012). Environmental studies. Concept Publishing Co.Pvt Ltd.

Chicago Edition Citation

Singh,R.P, and Zubairul Islam. Environmental Studies. New Delhi: Concept Publishing Co.Pvt Ltd, 2012.

MLA citiranje

Singh,R.P, and Zubairul Islam. Environmental Studies. Concept Publishing Co.Pvt Ltd, 2012.

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