APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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