APA (7th ed.) Citation

Asimov, I. (1959). Realm of numbers. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Asimov, Isaac. Realm of Numbers. Boston: Houghton Mifflin, 1959.

MLA (9th ed.) Citation

Asimov, Isaac. Realm of Numbers. Houghton Mifflin, 1959.

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