APA Style

Lenferink, S. et al (2012). Journal of Public Procurement : Volume 12 Number 1 Spring 2012 (Volume 12 Number 1 Spring 2012). Boca Raton, FL: Pracademic Press.

MLA Style

Lenferink, Sander. et al. "Journal of Public Procurement : Volume 12 Number 1 Spring 2012". Volume 12 Number 1 Spring 2012 Boca Raton, FL: Pracademic Press, 2012. Text.