Cita APA

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

Citación estilo Chicago

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

Cita MLA

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