Keuning, J. (1973). Willem Jansz. Blaeu: A biography and history of his work as a cartographer and publisher. Theatrum Orbis Terrarum.
Chicago-Zitierstil (17. Ausg.)Keuning, Johannes. Willem Jansz. Blaeu: A Biography and History of His Work as a Cartographer and Publisher. Amsterdam: Theatrum Orbis Terrarum, 1973.
MLA-Zitierstil (9. Ausg.)Keuning, Johannes. Willem Jansz. Blaeu: A Biography and History of His Work as a Cartographer and Publisher. Theatrum Orbis Terrarum, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.