Sullivan, C. (2013). The clarity principle: How great leaders act decisively to define their business (and what happens when they don't). Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Sullivan, Chatham. The Clarity Principle: How Great Leaders Act Decisively to Define Their Business (and What Happens When They Don't). San Francisco, California: Jossey-Bass, 2013.
Lua MLA (9ú heag.)Sullivan, Chatham. The Clarity Principle: How Great Leaders Act Decisively to Define Their Business (and What Happens When They Don't). Jossey-Bass, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.