APA (7th ed.) Citation

Hall, M. (2011). Perfect square. Greenwillow Books.

Chicago Style (17th ed.) Citation

Hall, Michael. Perfect Square. New York: Greenwillow Books, 2011.

MLA (8th ed.) Citation

Hall, Michael. Perfect Square. Greenwillow Books, 2011.

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