APA (7th ed.) Citation

Soule, G. H. (1939). An economic constitution for democracy. Yale university press; [etc., etc.].

Chicago Style (17th ed.) Citation

Soule, George Henry. An Economic Constitution for Democracy. New Haven: Yale university press; [etc., etc.], 1939.

MLA (9th ed.) Citation

Soule, George Henry. An Economic Constitution for Democracy. Yale university press; [etc., etc.], 1939.