Cita APA (7th ed.)

Asimov, I. (1962). Words on the map. Houghton Mifflin.

Cita Chicago (17th ed.)

Asimov, Isaac. Words on the Map. Boston: Houghton Mifflin, 1962.

Cita MLA (8th ed.)

Asimov, Isaac. Words on the Map. Houghton Mifflin, 1962.