APA (7th ed.) Citation

Ferguson, J. M. (1950). Landmarks of economic thought: 2nd ed.

Chicago Style (17th ed.) Citation

Ferguson, John M. Landmarks of Economic Thought: 2nd Ed. New York, Longmans, Green, 1950.

MLA (9th ed.) Citation

Ferguson, John M. Landmarks of Economic Thought: 2nd Ed. 1950.