APA (7th ed.) Citation

Teckentrup, B. (2008). Grumpy Cat. Boxer Books.

Chicago Style (17th ed.) Citation

Teckentrup, Britta. Grumpy Cat. Boxer Books, 2008.

MLA (9th ed.) Citation

Teckentrup, Britta. Grumpy Cat. Boxer Books, 2008.

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