Krijbolder, B. J. J. (2019). 5th bibliography of the Krähenbühl-Family and her branches all over the world, originating in the canton of Berne, Switzerland (Fifth edition.). Bernard J.J. Krijbolder.

Krijbolder, Bernard J. J. 5th Bibliography of the Krähenbühl-Family and Her Branches All Over the World, Originating in the Canton of Berne, Switzerland. Fifth edition. Bernard J.J. Krijbolder, 2019.