एपीए उद्धरण

Purohit, S. S., & Agrawal, A. K. (2004). Ecology and environmental biology. Mrs.Sarswati Purohit.

शिकागो स्टाइल उद्धरण

Purohit, S. S., और Ashok K. Agrawal. Ecology and Environmental Biology. Jodhpur: Mrs.Sarswati Purohit, 2004.

एमएलए उद्धरण

Purohit, S. S., और Ashok K. Agrawal. Ecology and Environmental Biology. Mrs.Sarswati Purohit, 2004.