Cita APA (7th ed.)

Dunlop, J. T. (1978). Labor in the twentieth century. ELSEVIER.

Cita Chicago (17th ed.)

Dunlop, John T. Labor in the Twentieth Century. ELSEVIER, 1978.

Cita MLA (8th ed.)

Dunlop, John T. Labor in the Twentieth Century. ELSEVIER, 1978.