Cita APA (7a ed.)

Roberts, H. S. (1944). The rubber workers ; labor organization and collective bargaining in the rubber industry. Harper.

Cita Chicago Style (17a ed.)

Roberts, Harold Selig. The Rubber Workers ; Labor Organization and Collective Bargaining in the Rubber Industry. Nwe York and Lonodon: Harper, 1944.

Cita MLA (9a ed.)

Roberts, Harold Selig. The Rubber Workers ; Labor Organization and Collective Bargaining in the Rubber Industry. Harper, 1944.