ASSE Journal. American Society of Safety Professionals (ASSP).
Lua i Stíl Chicago (17ú heag.)ASSE Journal. American Society of Safety Professionals (ASSP).
Lua MLA (9ú heag.)ASSE Journal. American Society of Safety Professionals (ASSP).
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.