Agarwal KC. (2001). Fundamentals of environmental biology. Nidhi.
Lua i Stíl Chicago (17ú heag.)Agarwal KC. Fundamentals of Environmental Biology. Bikaner: Nidhi, 2001.
Lua MLA (9ú heag.)Agarwal KC. Fundamentals of Environmental Biology. Nidhi, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.