APA-viite (7. p.)

Crutchfield, N., & Roughton, J. (2014). Safety culture: An innovative leadership approach. Butterworth-Heinemann.

Chicago-viite (17. p.)

Crutchfield, Nathan, ja James Roughton. Safety Culture: An Innovative Leadership Approach. Oxford, England ; Waltham, Mass.: Butterworth-Heinemann, 2014.

MLA-viite (9. p.)

Crutchfield, Nathan, ja James Roughton. Safety Culture: An Innovative Leadership Approach. Butterworth-Heinemann, 2014.