MLA

Steyn, Douw G, and Silvia Trini Castelli. Air Pollution Modeling and Its Application Xxi. Springer Netherlands, 2012.

APA

Steyn, D. G, & Trini Castelli, S. (2012). Air Pollution Modeling and its Application XXI. Springer Netherlands.

Chicago

Steyn, Douw G., and Silvia Trini Castelli. Air Pollution Modeling and Its Application XXI. : Springer Netherlands, 2012.