APA (7th ed.) Citation

Cassel, G. (1903). The nature and necessity of interest. Macmillan.

Chicago Style (17th ed.) Citation

Cassel, Gustav. The Nature and Necessity of Interest. London: Macmillan, 1903.

MLA (9th ed.) Citation

Cassel, Gustav. The Nature and Necessity of Interest. Macmillan, 1903.