APA (7th ed.) Citation

Stewart, T. L., & Scheweling, N. (2019). Secret Keepers. Thienemann.

Chicago Style (17th ed.) Citation

Stewart, Trenton Lee, and Nina Scheweling. Secret Keepers. Stttgart: Thienemann, 2019.

MLA (9th ed.) Citation

Stewart, Trenton Lee, and Nina Scheweling. Secret Keepers. Thienemann, 2019.

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