APA (7th ed.) Citation

Witherell, W. (1988). How the racers ski (New ed.). Norton.

Chicago Style (17th ed.) Citation

Witherell, Warren. How the Racers Ski. New ed. New York: Norton, 1988.

MLA (9th ed.) Citation

Witherell, Warren. How the Racers Ski. New ed. Norton, 1988.