APA (7th ed.) Citation

Gold, H. L., & Pohl, F. Galaxy reader (Some vol. are book club editions.). Doubleday [etc.].

Chicago Style (17th ed.) Citation

Gold, H. L., and Frederik Pohl. Galaxy Reader. Some vol. are book club editions. Garden City, N.Y.: Doubleday [etc.].

MLA (9th ed.) Citation

Gold, H. L., and Frederik Pohl. Galaxy Reader. Some vol. are book club editions. Doubleday [etc.].