एपीए उद्धरण

KC Agarwal. (1989). Environmental biology. Agro Botanical publishers.

शिकागो स्टाइल उद्धरण

KC Agarwal. Environmental Biology. Delhi: Agro Botanical publishers, 1989.

एमएलए उद्धरण

KC Agarwal. Environmental Biology. Agro Botanical publishers, 1989.