Kranzberg, M., & Gies, J. (1975). By the sweat of thy brow: Work in the Western world. Putnam.
Citace podle Chicago (17th ed.)Kranzberg, Melvin, a Joseph Gies. By the Sweat of Thy Brow: Work in the Western World. New York: Putnam, 1975.
Citace podle MLA (9th ed.)Kranzberg, Melvin, a Joseph Gies. By the Sweat of Thy Brow: Work in the Western World. Putnam, 1975.
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