APA (7th ed.) Citation

Seuss. (1997). The cat in the hat. Harper Collins Publishers.

Chicago Style (17th ed.) Citation

Seuss. The Cat in the Hat. London: Harper Collins Publishers, 1997.

MLA (9th ed.) Citation

Seuss. The Cat in the Hat. Harper Collins Publishers, 1997.

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