APA (7th ed.) Citation

Keene, C. (1987). The hidden staircase. Grosset and Dunlop Publishers.

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Hidden Staircase. New York: Grosset and Dunlop Publishers, 1987.

MLA (9th ed.) Citation

Keene, Carolyn. The Hidden Staircase. Grosset and Dunlop Publishers, 1987.

Warning: These citations may not always be 100% accurate.