APA (7th ed.) Citation

Bray, R. J., & Loughhead, R. E. (1979). Sunspots (Dover ed.). Dover Publications.

Chicago Style (17th ed.) Citation

Bray, R. J., and R. E. Loughhead. Sunspots. Dover ed. New York: Dover Publications, 1979.

MLA (8th ed.) Citation

Bray, R. J., and R. E. Loughhead. Sunspots. Dover ed. Dover Publications, 1979.