APA (7th ed.) Citation

Chapman, R. D., & Brandt, J. C. (1984). The comet book: A guide for the return of Halley's Comet. Jones and Bartlett Publishers.

Chicago Style (17th ed.) Citation

Chapman, Robert DeWitt, and John C. Brandt. The Comet Book: A Guide for the Return of Halley's Comet. Boston: Jones and Bartlett Publishers, 1984.

MLA (9th ed.) Citation

Chapman, Robert DeWitt, and John C. Brandt. The Comet Book: A Guide for the Return of Halley's Comet. Jones and Bartlett Publishers, 1984.