Goetsch, D. L. (2011). Occupational safety and health for technologists, engineers, and managers (7th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Goetsch, David L. Occupational Safety and Health for Technologists, Engineers, and Managers. 7th ed. Upper Saddle River, N.J: Prentice Hall, 2011.
Lua MLA (9ú heag.)Goetsch, David L. Occupational Safety and Health for Technologists, Engineers, and Managers. 7th ed. Prentice Hall, 2011.
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