APA (7e ed.) Bronvermelding

Goddard, H. H. The Kallikak Family: A Study in the Heredity of Feeble-Mindedness.

Chicago (17e ed.) Bronvermelding

Goddard, Henry Herbert. The Kallikak Family: A Study in the Heredity of Feeble-Mindedness.

MLA (9e ed.) Bronvermelding

Goddard, Henry Herbert. The Kallikak Family: A Study in the Heredity of Feeble-Mindedness.

Let op: Deze citaties zijn niet altijd 100% accuraat.