MLA

Vermeulen, Peter, and Thomas Fondelli. Syndroom Van Asperger. Tielt: Lannoo, 2009.

APA

Vermeulen, P., & Fondelli, T. (2009). Syndroom van Asperger. Tielt: Lannoo.

Chicago

Vermeulen, Peter, and Thomas Fondelli. Syndroom Van Asperger. Tielt: Lannoo, 2009.