APA (7th ed.) Citation

Ruelle, K. G. (2020). Surprising spies: And unexpected heroes of World War II (First edition.). Holiday House.

Chicago Style (17th ed.) Citation

Ruelle, Karen Gray. Surprising Spies: And Unexpected Heroes of World War II. First edition. New York: Holiday House, 2020.

MLA (8th ed.) Citation

Ruelle, Karen Gray. Surprising Spies: And Unexpected Heroes of World War II. First edition. Holiday House, 2020.

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