APA (7th ed.) Citation

Ying, C., & McMullen, B. (2009). 109 forgotten American heroes: (plus nine or so villains). DK Publishing.

Chicago Style (17th ed.) Citation

Ying, Chris, and Brian McMullen. 109 Forgotten American Heroes: (plus Nine or so Villains). New York, N.Y.: DK Publishing, 2009.

MLA (8th ed.) Citation

Ying, Chris, and Brian McMullen. 109 Forgotten American Heroes: (plus Nine or so Villains). DK Publishing, 2009.

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