Kleiner. Stages of Occupational Regulation. W.E. Upjohn Institute.
Lua i Stíl Chicago (17ú heag.)Kleiner. Stages of Occupational Regulation. W.E. Upjohn Institute.
Lua MLA (9ú heag.)Kleiner. Stages of Occupational Regulation. W.E. Upjohn Institute.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.