(2002). Safety, health, and asset protection. Lewis.
Lua i Stíl Chicago (17ú heag.)Safety, Health, and Asset Protection. Lewis, 2002.
Lua MLA (8ú heag.)Safety, Health, and Asset Protection. Lewis, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.