Goleman Daniel. (2013). Focus: Hidden Driver of Excellence. Bloomsbury.
Lua i Stíl Chicago (17ú heag.)Goleman Daniel. Focus: Hidden Driver of Excellence. Bloomsbury, 2013.
Lua MLA (9ú heag.)Goleman Daniel. Focus: Hidden Driver of Excellence. Bloomsbury, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.