MLA

Geertman, Stan, Fred Toppen, and John Stillwell. Planning Support Systems for Sustainable Urban Development. Springer Berlin Heidelberg, 2013.

APA

Geertman, S., Toppen, F., & Stillwell, J. (2013). Planning Support Systems for Sustainable Urban Development. Springer Berlin Heidelberg.

Chicago

Geertman, Stan, Fred Toppen, and John Stillwell. Planning Support Systems for Sustainable Urban Development. : Springer Berlin Heidelberg, 2013.