Gladwell Malcolm. (2010). Tipping Point: How Little thing can Make a Big Difference. Little Brown.
Lua i Stíl Chicago (17ú heag.)Gladwell Malcolm. Tipping Point: How Little Thing Can Make a Big Difference. Little Brown, 2010.
Lua MLA (9ú heag.)Gladwell Malcolm. Tipping Point: How Little Thing Can Make a Big Difference. Little Brown, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.