Cita APA

Lens Sidney 1912-1986. (1960). Working men: The story of labor (Fifth impresion.). New York: G. P. Putnam´s Sons.

Citación estilo Chicago

Lens Sidney 1912-1986. Working Men: The Story of Labor. Fifth impresion. New York: G. P. Putnam´s Sons, 1960.

Cita MLA

Lens Sidney 1912-1986. Working Men: The Story of Labor. Fifth impresion. New York: G. P. Putnam´s Sons, 1960.