APA (7th ed.) Citation

Asimov, J., & Asimov, I. (1987). Norby, robot for hire. Berkley Pub. Group.

Chicago Style (17th ed.) Citation

Asimov, Janet, and Isaac Asimov. Norby, Robot for Hire. New York: Berkley Pub. Group, 1987.

MLA (9th ed.) Citation

Asimov, Janet, and Isaac Asimov. Norby, Robot for Hire. Berkley Pub. Group, 1987.

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