APA (7th ed.) Citation

Bretnor, R., & Campbell, J. W., Jr. (1979). Modern science fiction, its meaning and its future (2d ed.). Advent Publishers.

Chicago Style (17th ed.) Citation

Bretnor, Reginald, and John W. Campbell, Jr. Modern Science Fiction, Its Meaning and Its Future. 2d ed. Chicago: Advent Publishers, 1979.

MLA (9th ed.) Citation

Bretnor, Reginald, and John W. Campbell, Jr. Modern Science Fiction, Its Meaning and Its Future. 2d ed. Advent Publishers, 1979.