7Hagel, J. III., Armstrong, A. G. Net Gain: Expanding Markets through Virtual Communities [M]. Boston, MA: Harvard Business School Press, 1997.
8Casalo, L., Flavian, C., Guinaliu, M. The Impaet of Participation in Virtual Brand Communities on Consumer Trust and Loyalty: The Case of Free Software[J]. Online Information Review, 2007,31 (6):775-792.
9DeLone, W. H., McLean, E. R. The DeLone and McLean Model of Information Systems Success: A Ten-year Update[J]. Journal of Management Information Systems, 2003,19(4):9-30.
10Lin, H. F. The Role of Online and Offline Features in Sustaining Virtual Communities: An Empirical Study[J]. Internet Research, 2007,17(2):119-138.
