APA (7th ed.) Citation

Keene, C. (1970). The secret in the old attic (21). Grosset & Dunlap.

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Secret in the Old Attic (21). New York: Grosset & Dunlap, 1970.

MLA (9th ed.) Citation

Keene, Carolyn. The Secret in the Old Attic (21). Grosset & Dunlap, 1970.

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