Robereto Michael A. Mount Everest ---- 1996. Harvard Business.
Lua i Stíl Chicago (17ú heag.)Robereto Michael A. Mount Everest ---- 1996. : Harvard Business.
Lua MLA (9ú heag.)Robereto Michael A. Mount Everest ---- 1996. Harvard Business.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.