3BECKER G S. Human Capital: A Theoretical and Empirical Analysis with Special Reference to Education[M]. Chicago: The University of Chicago Press,1993.
4伊特韦尔．新帕格雷夫经济学大词典[S]．北京：经济科学出版社．1992．
5NAHAPIET, GHOSHA. Social capital, intellectual capital, and the organizational advantage[J]. Academy of Management Review. 1998,23 (2) : 242-266.
6GRANOVETTER M. The strength of weak ties[J].American Journal of Sociology. 1973,78: 1360-1380.
7GRANOVETTER M. Getting a Job: a Study of Contacts and Careers[M]. Cambridge MA: Harvard University Press, 1974.
8BIAN YANJIE. Bringing strong ties back in: indirect ties, network bridges, and iob searches in China[J].American Sociological Review. 1997,62 (3) : 366-385.
9MARSDEN P V. Network data and measurement[J].Annual Review of Sociology, 1990,16 :435-463.
10MARIN A. Are respondents more likely to list alters with certain characteristics? Implications for name generator data[J]. Social Network, 2004, 26:289-307.
