Focus. 6.

MLA

Vandenberghe, Bart, et al. Focus. 6. Antwerpen: De Boeck, 2012.

APA

Vandenberghe, B., Stessels, A., Biebau, D., & De Smet, S. (2012). Focus. 6. Antwerpen: De Boeck.

Chicago

Vandenberghe, Bart, Antoon Stessels, Dominique Biebau, and Sanne De Smet. Focus. 6. Antwerpen: De Boeck, 2012.