APA Citation

Seuss, D. 1., & Seuss, D. 1. (1987). Happy birthday to you! New York: Random House.

Chicago Style Citation

Seuss, Dr. 1904-1991,, and Dr. 1904-1991 Seuss. Happy Birthday to You! New York: Random House, 1987.

MLA Citation

Seuss, Dr. 1904-1991,, and Dr. 1904-1991 Seuss. Happy Birthday to You! New York: Random House, 1987.

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