एपीए उद्धरण

Bardgett, R., Usher, M., & Hopkins, D. (2009). Biological Diversity and Function in Soils. Cambridge University Press.

शिकागो स्टाइल उद्धरण

Bardgett, Richard, Michael Usher, और David Hopkins. Biological Diversity and Function in Soils. Cambridge University Press, 2009.

एमएलए उद्धरण

Bardgett, Richard, et al. Biological Diversity and Function in Soils. Cambridge University Press, 2009.