APA (7th ed.) Citation

Nicholson, J. S. (1901). Principles of political economy. Macmillan.

Chicago Style (17th ed.) Citation

Nicholson, Joseph Shield. Principles of Political Economy. New York: Macmillan, 1901.

MLA (9th ed.) Citation

Nicholson, Joseph Shield. Principles of Political Economy. Macmillan, 1901.

Warning: These citations may not always be 100% accurate.