APA (7th ed.) Citation

Vogt, G. (1987). Halley's comet: What we've learned. F. Watts.

Chicago Style (17th ed.) Citation

Vogt, Gregory. Halley's Comet: What We've Learned. New York: F. Watts, 1987.

MLA (9th ed.) Citation

Vogt, Gregory. Halley's Comet: What We've Learned. F. Watts, 1987.