Goeldner, C. R., Fellhauer, C., & Kates, J. (1976). The Vail skier. Business Research Division, Graduate School of Business Administration, University of Colorado.
Lua i Stíl Chicago (17ú heag.)Goeldner, Charles R., Cherly Fellhauer, agus John Kates. The Vail Skier. Boulder, Colo.: Business Research Division, Graduate School of Business Administration, University of Colorado, 1976.
Lua MLA (8ú heag.)Goeldner, Charles R., et al. The Vail Skier. Business Research Division, Graduate School of Business Administration, University of Colorado, 1976.
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