Cita APA (7a ed.)

Blake, R. P. Indusrial Safety (3a ed.). Prentice-Hall.

Cita Chicago Style (17a ed.)

Blake, Roland P. Indusrial Safety. 3a ed. Englewood Cliffs: Prentice-Hall.

Cita MLA (9a ed.)

Blake, Roland P. Indusrial Safety. 3a ed. Prentice-Hall.