APA (7th ed.) Citation

Gunn, J. E. (1975). Alternate worlds: The illustrated history of science fiction. Prentice-Hall.

Chicago Style (17th ed.) Citation

Gunn, James E. Alternate Worlds: The Illustrated History of Science Fiction. Englewood Cliffs, N.J.: Prentice-Hall, 1975.

MLA (9th ed.) Citation

Gunn, James E. Alternate Worlds: The Illustrated History of Science Fiction. Prentice-Hall, 1975.