TY  - BOOK
AU  - Berger, Jonah
TI  -  Contagious : : how to build word of mouth in the digital age
SN  - 9781471111709
U1  - 659.133 
PY  - 2013///
CY  -  London, 
PB  - Simon & Schuster
N1  - 
Why things catch on
Social currency
Triggers
Emotion
Public
Practical value
Stories
N2  - 2014
ER  -