Franz Courtens.

MLA

Vanzype, Gustave, and Franz Courtens. Franz Courtens. Anvers: De Sikkel, 1950.

APA

Vanzype, G., & Courtens, F. (1950). Franz Courtens. Anvers: De Sikkel.

Chicago

Vanzype, Gustave, and Franz Courtens. Franz Courtens. Anvers: De Sikkel, 1950.