एपीए उद्धरण

Kumar, A. (2007). Prospects & problems of environment. ABD.

शिकागो स्टाइल उद्धरण

Kumar, Arvind. Prospects & Problems of Environment. Jaipur: ABD, 2007.

एमएलए उद्धरण

Kumar, Arvind. Prospects & Problems of Environment. ABD, 2007.