APA (7th ed.) Citation

Keene. Carolyn. (1968). Mystery at the ski jump. Grosset & Dunlap.

Chicago Style (17th ed.) Citation

Keene. Carolyn. Mystery at the Ski Jump. New York: Grosset & Dunlap, 1968.

MLA (9th ed.) Citation

Keene. Carolyn. Mystery at the Ski Jump. Grosset & Dunlap, 1968.