APA (7th ed.) Citation

Pene Du Bois, W. (1975). The twenty-one balloons. The Viking Press.

Chicago Style (17th ed.) Citation

Pene Du Bois, William. The Twenty-one Balloons. New York: The Viking Press, 1975.

MLA (9th ed.) Citation

Pene Du Bois, William. The Twenty-one Balloons. The Viking Press, 1975.