MLA

Vollmer, Walter, J. L De Belder, and Peter Thiry. De Broeders. Antwerpen: Die Poorte, 1941.

APA

Vollmer, W., De Belder, J. L, & Thiry, P. (1941). De Broeders. Antwerpen: Die Poorte.

Chicago

Vollmer, Walter, De Broeders. Translated by J. L De Belder and Peter Thiry. Antwerpen: Die Poorte, 1941.