APA (7th ed.) Citation

Gemmell, J., & Balsley, H. L. (1953). Principles of economics. D.C. Heath and Comp.

Chicago Style (17th ed.) Citation

Gemmell, James, and Howard L. Balsley. Principles of Economics. D.C. Heath and Comp, 1953.

MLA (8th ed.) Citation

Gemmell, James, and Howard L. Balsley. Principles of Economics. D.C. Heath and Comp, 1953.

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