APA (7th ed.) Citation

Commons, J. R. (1921). Trade unionism and labor problems: 2d series, ed. with an introduction. Ginn and Co.

Chicago Style (17th ed.) Citation

Commons, John R. Trade Unionism and Labor Problems: 2d Series, Ed. with an Introduction. Boston, New York [etc.]: Ginn and Co, 1921.

MLA (8th ed.) Citation

Commons, John R. Trade Unionism and Labor Problems: 2d Series, Ed. with an Introduction. Ginn and Co, 1921.