![TSM Relative importance of information sources used by travel opinion leaders: M.T. Troncelli and John R. Thompson, Journal of Travel Research (Business Research Division, University of Colorado, Boulder, Colorado 80302, USA), Volume XIV, Number 4, Spring 1976, pp. 11–14]()
TSM Relative importance of information sources used by travel opinion leaders: M.T. Troncelli and John R. Thompson, Journal of Travel Research (Business Research Division, University of Colorado, Boulder, Colorado 80302, USA), Volume XIV, Number 4, Spring 1976, pp. 11–141976