Cita APA (7th ed.)

Asfahl, C. R. (1990). Industrial safety and health management (2nd ed.). Prentice Hall.

Cita Chicago (17th ed.)

Asfahl, C. Ray. Industrial Safety and Health Management. 2nd ed. Englewood Cliffs, N.J: Prentice Hall, 1990.

Cita MLA (9th ed.)

Asfahl, C. Ray. Industrial Safety and Health Management. 2nd ed. Prentice Hall, 1990.