MLA

Varma, Ajit, et al. Microbial Activity In the Rhizoshere. Dordrecht: Springer Berlin Heidelberg, 2006.

APA

Varma, A., Manoharachary, C., Mukerji, K. G, & Singh, J. (2006). Microbial Activity in the Rhizoshere. Dordrecht: Springer Berlin Heidelberg.

Chicago

Varma, Ajit, C Manoharachary, K. G Mukerji, and Jagjit Singh. Microbial Activity In the Rhizoshere. Dordrecht: Springer Berlin Heidelberg, 2006.