Brady, C. M. Extra Mile, The: How to engage your people to win. Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Brady, Chris; MacLeod. Extra Mile, The: How to Engage Your People to Win. Pearson Education UK.
Lua MLA (8ú heag.)Brady, Chris; MacLeod. Extra Mile, The: How to Engage Your People to Win. Pearson Education UK.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.