Burnison, G. (2013). Lead. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)Burnison, Gary. Lead. Hoboken, NJ: John Wiley and Sons, 2013.
Lua MLA (9ú heag.)Burnison, Gary. Lead. John Wiley and Sons, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.