GLADWELL MALCOLM. (2000). 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, 2000.
Lua MLA (9ú heag.)GLADWELL MALCOLM. TIPPING POINT: HOW LITTLE THINGS CAN MAKE A BIG DIFFERENCE. ABACUS PRESS, 2000.
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