1. Bourdieu, P. & Wacquant, L. (1992).An invitation to reflexive sociology. Chicago: University of Chicago Press.
2. Fountain, J. E. (1997). Social capital: A key enabler of innovation in science and technology. In L. M. Branscomb & J. Keller (Eds.),Investing in innovation: Toward a consensus strategy for federal technology policy.Cambridge, MA: MIT Press.
3. Gaev, D. (1976).The psychology of loneliness. Chicago, Illinois: Adams Press.
4. Jones, W. (1982). Loneliness and social behavior. In L. A. Peplau & D. Perlman (Eds.),Loneliness: A sourcebook of current theory, research and therapy(pp. 283–52). New York: Wiley-Interscience.
5. Kellam, S. G., Simon, M. B. & Ensminger, M. E. (1983). Antecedents in first grade of teenage substance use and psychological well-being: A ten-year community-wide prospective study. In D. F. Ricks & B.S. Dohrenwend (Eds.),Origins of Psychopathology(pp. 17–42). Cambridge: Cambridge University Press.