APA aipamena

Kumar, A., & Nehar, S. (2007). Environmental protection. Daya Publishing House.

Chicago Style aipamena

Kumar, Arvind, and Shamshun Nehar. Environmental Protection. Delhi: Daya Publishing House, 2007.

MLA aipamena

Kumar, Arvind, and Shamshun Nehar. Environmental Protection. Daya Publishing House, 2007.