Cita APA (7a ed.)

Commons, J. R. (1921). Trade unionism and labor problems: Second series. Ginn and Company.

Cita Chicago Style (17a ed.)

Commons, John Rogers. Trade Unionism and Labor Problems: Second Series. Boston [etc.]: Ginn and Company, 1921.

Cita MLA (9a ed.)

Commons, John Rogers. Trade Unionism and Labor Problems: Second Series. Ginn and Company, 1921.