APA (7th ed.) Citation

Feldman, D. (1989). Who put the butter in butterfly? Harper & Row.

Chicago Style (17th ed.) Citation

Feldman, David. Who Put the Butter in Butterfly? New York: Harper & Row, 1989.

MLA (9th ed.) Citation

Feldman, David. Who Put the Butter in Butterfly? Harper & Row, 1989.

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