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.

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.

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.