TY  - BOOK
AU  - Song Yang et.al., 
TI  - Social network analysis methods and examples 
SN  - 978-1-4833-2521-7
U1  - Cir. 302.3 Y22 C2017 
PY  - 2017///
CY  - London 
PB  - Sage publications, Inc. 
ER  -