Hammer, W., & Price, D. (2001). Occupational safety management and engineering (5th ed.). Prentice Hall.
Citace podle Chicago (17th ed.)Hammer, Willie, a Dennis Price. Occupational Safety Management and Engineering. 5th ed. Upper Saddle River, N.J: Prentice Hall, 2001.
Citace podle MLA (9th ed.)Hammer, Willie, a Dennis Price. Occupational Safety Management and Engineering. 5th ed. Prentice Hall, 2001.
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