APA (7th ed.) Citation

Fulghum, R. (1988). All I really need to know I learned in kindergarten: Uncommon thoughts on common things. IVY Books.

Chicago Style (17th ed.) Citation

Fulghum, Robert. All I Really Need to Know I Learned in Kindergarten: Uncommon Thoughts on Common Things. New York: IVY Books, 1988.

MLA (9th ed.) Citation

Fulghum, Robert. All I Really Need to Know I Learned in Kindergarten: Uncommon Thoughts on Common Things. IVY Books, 1988.