Παραπομπή σε μορφή APA (7η εκδ.)

Friend, M. A., & Kohn, J. P. (2010). Fundamentals of occupational safety and health (5th ed.). Government Institutes.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Friend, Mark A., και James P. Kohn. Fundamentals of Occupational Safety and Health. 5th ed. Lanham: Government Institutes, 2010.

Παραπομπή σε μορφή MLA (9th εκδ.)

Friend, Mark A., και James P. Kohn. Fundamentals of Occupational Safety and Health. 5th ed. Government Institutes, 2010.