Carroll, P. (2008). Billion dollar lessons: What you can learn from the most inexcusable business failures of the last twenty-five years (NA.). Penguin Group.
Lua i Stíl Chicago (17ú heag.)Carroll, Paul. Billion Dollar Lessons: What You Can Learn from the Most Inexcusable Business Failures of the Last Twenty-five Years. NA. USA: Penguin Group, 2008.
Lua MLA (9ú heag.)Carroll, Paul. Billion Dollar Lessons: What You Can Learn from the Most Inexcusable Business Failures of the Last Twenty-five Years. NA. Penguin Group, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.