Goeldner, C. R. (1978). The airline skier, 1977-78 season: A comparison of the skiers traveling by commercial air in five skier studies conducted at Aspen, Vail, Steamboat, Winter Park and Copper Mountain. Business Research Division, University of Colorado.
Chicago-viite (17. p.)Goeldner, Charles R. The Airline Skier, 1977-78 Season: A Comparison of the Skiers Traveling by Commercial Air in Five Skier Studies Conducted at Aspen, Vail, Steamboat, Winter Park and Copper Mountain. Boulder, Colo.: Business Research Division, University of Colorado, 1978.
MLA-viite (8. p.)Goeldner, Charles R. The Airline Skier, 1977-78 Season: A Comparison of the Skiers Traveling by Commercial Air in Five Skier Studies Conducted at Aspen, Vail, Steamboat, Winter Park and Copper Mountain. Business Research Division, University of Colorado, 1978.