APA (7th ed.) Citation

Rosenthal, A. K., & Lichtenheld, T. (2012). Wumbers: It's a word cr8ed with a number! Chronicle Books.

Chicago Style (17th ed.) Citation

Rosenthal, Amy Krouse, and Tom Lichtenheld. Wumbers: It's a Word Cr8ed with a Number! San Francisco, Calif.: Chronicle Books, 2012.

MLA (8th ed.) Citation

Rosenthal, Amy Krouse, and Tom Lichtenheld. Wumbers: It's a Word Cr8ed with a Number! Chronicle Books, 2012.

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