Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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