APA (7th ed.) Citation

Willis,Ann. (2002). Guess who?: A lift-the-flap animals book. Time-Life for children.

Chicago Style (17th ed.) Citation

Willis,Ann. Guess Who?: A Lift-the-flap Animals Book. U.S.A: Time-Life for children, 2002.

MLA (9th ed.) Citation

Willis,Ann. Guess Who?: A Lift-the-flap Animals Book. Time-Life for children, 2002.