APA (7th ed.) Citation

Ringo, J. (2013). Under a graveyard sky. Baen.

Chicago Style (17th ed.) Citation

Ringo, John. Under a Graveyard Sky. Riverdale, NY: Baen, 2013.

MLA (8th ed.) Citation

Ringo, John. Under a Graveyard Sky. Baen, 2013.

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