APA (7th ed.) Citation

Ingram, J. K., Scott, W. A., & Ely, R. T. (1915). A history of political economy (New & enl. ed.). A. & C. Black.

Chicago Style (17th ed.) Citation

Ingram, John K., William Amasa Scott, and Richard T. Ely. A History of Political Economy. New & enl. ed. London: A. & C. Black, 1915.

MLA (9th ed.) Citation

Ingram, John K., et al. A History of Political Economy. New & enl. ed. A. & C. Black, 1915.