APA (7th ed.) Citation

Robertson, J. M. (1928). The political economy of free trade. P. S. King & Son, ltd..

Chicago Style (17th ed.) Citation

Robertson, J. M. The Political Economy of Free Trade. London: P. S. King & Son, ltd., 1928.

MLA (8th ed.) Citation

Robertson, J. M. The Political Economy of Free Trade. P. S. King & Son, ltd., 1928.

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