Cita APA (7th ed.)

Hammer, W. (1975). Occupational safety management and engineering. Prentice-Hall.

Cita Chicago (17th ed.)

Hammer, Willie. Occupational Safety Management and Engineering. Englewood Cliffs, N.J: Prentice-Hall, 1975.

Cita MLA (9th ed.)

Hammer, Willie. Occupational Safety Management and Engineering. Prentice-Hall, 1975.