APA (7th ed.) Citation

Anvil, C., & Flint, E. (2006). The trouble with aliens. Baen.

Chicago Style (17th ed.) Citation

Anvil, Christopher, and Eric Flint. The Trouble with Aliens. Riverdale, NY: Baen, 2006.

MLA (9th ed.) Citation

Anvil, Christopher, and Eric Flint. The Trouble with Aliens. Baen, 2006.