Si, Kao <br/><br/>
The Friend Number Paradox / 
Kao Si, Xianchi Dai, and Robert S. Wyer Jr. 
 - Washington ;  American Psychological Association ,  January 2021. 
 - Volume 120, pages 84-98 :  illustration ;  28 cm. 
<br/><br/> Journal of Personality and Social Psychology, vol. 120, no. 1, pages 84-98, January 2021. 
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