MACLEOD, D. (1994). The Ergonomics Edge Improving Safety, Quality And Productivity Dan Macleod. Van Nostrand Reinhold.
Lua i Stíl Chicago (17ú heag.)MACLEOD, Dan. The Ergonomics Edge Improving Safety, Quality And Productivity Dan Macleod. Van Nostrand Reinhold, 1994.
Lua MLA (8ú heag.)MACLEOD, Dan. The Ergonomics Edge Improving Safety, Quality And Productivity Dan Macleod. Van Nostrand Reinhold, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.