APA (7th ed.) Citation

Bowden, O. (2015). Assassin's creed: Underworld (Ace premium edition.). Ace Books.

Chicago Style (17th ed.) Citation

Bowden, Oliver. Assassin's Creed: Underworld. Ace premium edition. New York: Ace Books, 2015.

MLA (9th ed.) Citation

Bowden, Oliver. Assassin's Creed: Underworld. Ace premium edition. Ace Books, 2015.