APA (7th ed.) Citation

Ellik, R., Evans, W. H., & Schmitz, J. H. (1966). The universes of E. E. Smith. Advent Publishers.

Chicago Style (17th ed.) Citation

Ellik, Ron, William H. Evans, and James H. Schmitz. The Universes of E. E. Smith. Chicago: Advent Publishers, 1966.

MLA (9th ed.) Citation

Ellik, Ron, et al. The Universes of E. E. Smith. Advent Publishers, 1966.