APA (7th ed.) Citation

Silverberg, R., & Greenberg, M. H. (1985). The Time travelers: A science fiction quartet. D.I. Fine.

Chicago Style (17th ed.) Citation

Silverberg, Robert, and Martin Harry Greenberg. The Time Travelers: A Science Fiction Quartet. New York: D.I. Fine, 1985.

MLA (9th ed.) Citation

Silverberg, Robert, and Martin Harry Greenberg. The Time Travelers: A Science Fiction Quartet. D.I. Fine, 1985.