APA (7th ed.) Citation

Soule, G. H. (1929). The useful art of economics. Macmillan.

Chicago Style (17th ed.) Citation

Soule, George Henry. The Useful Art of Economics. New York: Macmillan, 1929.

MLA (9th ed.) Citation

Soule, George Henry. The Useful Art of Economics. Macmillan, 1929.

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