APA (7th ed.) Citation

Moore Alan & Bolland, B. Batman: The killing Joke (The deluxe edition.).

Chicago Style (17th ed.) Citation

Moore Alan and Brian Bolland. Batman: The Killing Joke. The deluxe edition. Ottawa.

MLA (9th ed.) Citation

Moore Alan and Brian Bolland. Batman: The Killing Joke. The deluxe edition.

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