APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Keene, Carolyn, and Russell H. Tandy. The Secret of the Old Clock. New York: Grosset & Dunlap, 1987.

MLA (9th ed.) Citation

Keene, Carolyn, and Russell H. Tandy. The Secret of the Old Clock. Grosset & Dunlap, 1987.