Egbert I van Heemskerck.

MLA

Ballegeer, Jan Pieter. Egbert I Van Heemskerck. Gent, 1967.

APA

Ballegeer, J. Pieter. (1967). Egbert I van Heemskerck. Gent.

Chicago

Ballegeer, Jan Pieter Egbert I Van Heemskerck. Gent, 1967.