APA (7th ed.) Citation

Nicholson, J. S. (1911). Elements of political economy (2.ed.). Black.

Chicago Style (17th ed.) Citation

Nicholson, Joseph Shield. Elements of Political Economy. 2.ed. London: Black, 1911.

MLA (9th ed.) Citation

Nicholson, Joseph Shield. Elements of Political Economy. 2.ed. Black, 1911.