APA (7th ed.) Citation

Keene, C. (1977). The secret of the forgotten city (52). Grosset & Dunlap.

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Secret of the Forgotten City (52). New York: Grosset & Dunlap, 1977.

MLA (9th ed.) Citation

Keene, Carolyn. The Secret of the Forgotten City (52). Grosset & Dunlap, 1977.

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