Lua APA (7ú heag.)
Friend, M. A., & Kohn, J. P. (2010). Fundamentals of occupational safety and health (5th ed.). Government Institutes.
Lua i Stíl Chicago (17ú heag.)
Friend, Mark A., agus James P. Kohn. Fundamentals of Occupational Safety and Health. 5th ed. Lanham: Government Institutes, 2010.
Lua MLA (9ú heag.)
Friend, Mark A., agus James P. Kohn. Fundamentals of Occupational Safety and Health. 5th ed. Government Institutes, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.