MLA

Hemmelskamp, Jens; Weber, Matthias, et al. Towards Environmental Innovation Systems. Springer Berlin Heidelberg, 2005.

APA

Hemmelskamp, M., Hemmelskamp, J., Weber, K. Matthias, & Weber, M. (2005). Towards Environmental Innovation Systems. Springer Berlin Heidelberg.

Chicago

Hemmelskamp, Jens; Weber, Matthias, Jens Hemmelskamp, K. Matthias Weber, and Matthias Weber. Towards Environmental Innovation Systems. : Springer Berlin Heidelberg, 2005.