APA (7th ed.) Citation

Webster, C., & Laberis, S. (2017). Grumpy cat's first worst christmas. A Golden Book.

Chicago Style (17th ed.) Citation

Webster, Christy, and Steph Laberis. Grumpy Cat's First Worst Christmas. New York: A Golden Book, 2017.

MLA (9th ed.) Citation

Webster, Christy, and Steph Laberis. Grumpy Cat's First Worst Christmas. A Golden Book, 2017.