Championships References Sources Furrer, Art; Renggli, Sepp (1970) Skiakrobatik für jedermann Bern: Benteli Broze, Matt Charles (1972) Freestyle skiing Seattle: Wildcat Books Johnston, John; Daigle, Michel; Bowie, Darryl (1974) Freestyle Skiing: Technique Manual Vancouver: Winter Habit Productions Luini, Mario; Brunner, André (1975) Akroski : alles über Skiakrobatik u. Skikunst Bern: Benteli United States Ski Association (1977) Official freestyle competition rules Mohan, John; Hiltner, Walt (1978) Freestyle Skiing New York: Winchester Press Wieman, Randy; Newman, Robbi (1979) Freestyle Skiing: A Complete Guide to the Fundamentals of Hot Dogging Angus & Robertson Smalley, Park (1986) Skiing Freestyle: Official Training Guide of the U.S. Freestyle Ski Team Taylor Publishing Company Riess, Steven A. (2015) Sports in America from Colonial Times to the Twenty-First Century: An Encyclopedia Routledge External links Waterville Valley, Birthplace of Freestyle Skiing FIS homepage Freestyle skiing – olympic.org wiki.fis-ski.com The resource of information and knowledge on Freestyle Skiing, Ski Jumping, FIS World Ski Championships freestylebc.ski The largest provincial sport organization for freestyle skiing in Canada. freestylecanada.ski The official site of the Canadian Freestyle Ski Association. Your source for moguls, aerials, halfpipe and slopestyle skiing in Canada. Winter Olympic sports Acrobatic sports