Cita APA (7th ed.)

Wentz, C. A. (1998). Safety, health, and environmental protection. McGraw Hill.

Cita Chicago (17th ed.)

Wentz, Charles A. Safety, Health, and Environmental Protection. Boston: McGraw Hill, 1998.

Cita MLA (9th ed.)

Wentz, Charles A. Safety, Health, and Environmental Protection. McGraw Hill, 1998.