Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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