APA (7th ed.) Citation

Ackerknecht, E. H. (1965). History and geography of the most important diseases. Hafner Pub.

Chicago Style (17th ed.) Citation

Ackerknecht, Erwin Heinz. History and Geography of the Most Important Diseases. New York: Hafner Pub, 1965.

MLA (9th ed.) Citation

Ackerknecht, Erwin Heinz. History and Geography of the Most Important Diseases. Hafner Pub, 1965.