APA (7th ed.) Citation

Keene, C. (1987). The secret of the old clock (1). Grosset & Dunlap.

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Secret of the Old Clock (1). New York: Grosset & Dunlap, 1987.

MLA (9th ed.) Citation

Keene, Carolyn. The Secret of the Old Clock (1). Grosset & Dunlap, 1987.