Cita APA (7th ed.)
(1960). Economic froces: In the U.S.A. : in facts and figures (6a. ed.). Department of Labor.
Cita Chicago (17th ed.)
Economic Froces: In the U.S.A. : In Facts and Figures. 6a. ed. Washington: Department of Labor, 1960.
Cita MLA (9th ed.)
Economic Froces: In the U.S.A. : In Facts and Figures. 6a. ed. Department of Labor, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.