APA (7th ed.) Citation

Keene, C. (1986). The Nancy Drew Files case 1: Secrets Can Kill.

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Nancy Drew Files Case 1: Secrets Can Kill. Usa, 1986.

MLA (9th ed.) Citation

Keene, Carolyn. The Nancy Drew Files Case 1: Secrets Can Kill. 1986.

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