GLADWELL MALCOLM. (2002). TIPPING POINT: HOW LITTLE THINGS CAN MAKE A BIG DIFFERENCE. ABACUS PRESS.
Lua i Stíl Chicago (17ú heag.)GLADWELL MALCOLM. TIPPING POINT: HOW LITTLE THINGS CAN MAKE A BIG DIFFERENCE. LONDON: ABACUS PRESS, 2002.
Lua MLA (9ú heag.)GLADWELL MALCOLM. TIPPING POINT: HOW LITTLE THINGS CAN MAKE A BIG DIFFERENCE. ABACUS PRESS, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.