Gitlin, Martin & Wos, Joe: A Celebration of Animation: The 100 Greatest Cartoon Characters in Television History, s. 68–. Lyons Press, 15.3.2018. ISBN 978-1-63076-279-7. Teoksen verkkoversio.(englanniksi)
cataroo.com
Cawley, John & Korkis, Jim: Woody WoodpeckerEncyclopedia of Cartoon Superstars. Viitattu 24.11.2018 (englanniksi).