APA (7th ed.) Citation

Seuss, D. (2003). Dr. Seuss' sleep book. Dr. SeussCollins.

Chicago Style (17th ed.) Citation

Seuss, Dr. Dr. Seuss' Sleep Book. USA: Dr. SeussCollins, 2003.

MLA (9th ed.) Citation

Seuss, Dr. Dr. Seuss' Sleep Book. Dr. SeussCollins, 2003.

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