APA (7th ed.) Citation

Olde Heuvelt, T., & Gilula, M. (2022). Echo (First edition.). Nightfire.

Chicago Style (17th ed.) Citation

Olde Heuvelt, Thomas, and Moshe Gilula. Echo. First edition. New York: Nightfire, 2022.

MLA (8th ed.) Citation

Olde Heuvelt, Thomas, and Moshe Gilula. Echo. First edition. Nightfire, 2022.

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