Cita APA (7th ed.)

Abbott, E. A., Lindgren, W. F., & Banchoff, T. (2010). Flatland. Cambridge University Press : Mathematical Association of America.

Cita Chicago (17th ed.)

Abbott, Edwin Abbott, William F. Lindgren, i Thomas Banchoff. Flatland. Cambridge ; New York ; Washington, District of Columbia: Cambridge University Press : Mathematical Association of America, 2010.

Cita MLA (9th ed.)

Abbott, Edwin Abbott, et al. Flatland. Cambridge University Press : Mathematical Association of America, 2010.