MLA

Varma, Ajit, Petra Marschner, and Zdenko Rengel. Nutrient Cycling In Terrestrial Ecosystems. Springer Berlin Heidelberg, 2007.

APA

Varma, A., Marschner, P., & Rengel, Z. (2007). Nutrient Cycling in Terrestrial Ecosystems. Springer Berlin Heidelberg.

Chicago

Varma, Ajit, Petra Marschner, and Zdenko Rengel. Nutrient Cycling In Terrestrial Ecosystems. : Springer Berlin Heidelberg, 2007.