Cita APA (7th ed.)

Blake, R. P. e. (1957). Industrial safety. Prentice-Hall.

Cita Chicago (17th ed.)

Blake, Roland P. ed. Industrial Safety. New Jersey: Prentice-Hall, 1957.

Cita MLA (9th ed.)

Blake, Roland P. ed. Industrial Safety. Prentice-Hall, 1957.