Roger Raveel.

MLA

Janssen, Paul A.J, and Roland Jooris. Roger Raveel. Beerse: Janssen Pharmaceutica, 1980.

APA

Janssen, P. A.J, & Jooris, R. (1980). Roger Raveel. Beerse: Janssen Pharmaceutica.

Chicago

Janssen, Paul A.J., and Roland Jooris. Roger Raveel. Beerse: Janssen Pharmaceutica, 1980.