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.