APA (7th ed.) Citation

Sykes, S. (2011). Black halo. Prometheus Books.

Chicago Style (17th ed.) Citation

Sykes, Sam. Black Halo. Amherst, N.Y.: Prometheus Books, 2011.

MLA (9th ed.) Citation

Sykes, Sam. Black Halo. Prometheus Books, 2011.

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