Beard, A. It's hard to be good. Harvard Business Review.
Lua i Stíl Chicago (17ú heag.)Beard, Alison. "It's Hard to Be Good." Harvard Business Review .
Lua MLA (9ú heag.)Beard, Alison. "It's Hard to Be Good." Harvard Business Review, .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.