Cita APA (7a ed.)

Abbott, E. A. (1987). Flatland: A romance of many dimensions. Penguin.

Cita Chicago Style (17a ed.)

Abbott, Edwin Abbott. Flatland: A Romance of Many Dimensions. London [etc.]: Penguin, 1987.

Cita MLA (9a ed.)

Abbott, Edwin Abbott. Flatland: A Romance of Many Dimensions. Penguin, 1987.