MLA

Wretmark, Gerdt. The Peptic Ulcer Individual; : a Study In Heredity, Physique, and Personality. Copenhagen: Munksgaard, 1953.

APA

Wretmark, G. (1953). The peptic ulcer individual; : a study in heredity, physique, and personality. Copenhagen: Munksgaard.

Chicago

Wretmark, Gerdt, The Peptic Ulcer Individual;: A Study In Heredity, Physique, and Personality. Copenhagen: Munksgaard, 1953.