Black, B. &. H. (2017). Ego free leadership: Ending the uncoscious habits. Greenleaf Book Group Press.
Lua i Stíl Chicago (17ú heag.)Black, Brandon & Huges. Ego Free Leadership: Ending the Uncoscious Habits. Austin, Texas: Greenleaf Book Group Press, 2017.
Lua MLA (9ú heag.)Black, Brandon & Huges. Ego Free Leadership: Ending the Uncoscious Habits. Greenleaf Book Group Press, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.