Goddard, H. H. (2008). The Kallikak family: A study in the heredity of feeble-mindedness / by Henry Herbert Goddard (Print-on-Demand reprint [der Ausgabe New York] 1912.). Moonglow.

Goddard, Henry Herbert. The Kallikak Family: A Study in the Heredity of Feeble-mindedness / by Henry Herbert Goddard. Print-on-Demand reprint [der Ausgabe New York] 1912. [North Chaleston, NC?]: Moonglow, 2008.

Goddard, Henry Herbert. The Kallikak Family: A Study in the Heredity of Feeble-mindedness / by Henry Herbert Goddard. Print-on-Demand reprint [der Ausgabe New York] 1912. Moonglow, 2008.