APA (7th ed.) Citation

Burger, D., & Abbott, E. A. (1994). Sphereland: A fantasy about curved spaces and an expanding universe. HarperPerennial.

Chicago Style (17th ed.) Citation

Burger, Dionys, and Edwin Abbott Abbott. Sphereland: A Fantasy About Curved Spaces and an Expanding Universe. New York: HarperPerennial, 1994.

MLA (8th ed.) Citation

Burger, Dionys, and Edwin Abbott Abbott. Sphereland: A Fantasy About Curved Spaces and an Expanding Universe. HarperPerennial, 1994.

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