APA (7th ed.) Citation

Eshbach, L. A., & Heinlein, R. A. (1964). Of worlds beyond: The science of science fiction writing. Advent Publishers.

Chicago Style (17th ed.) Citation

Eshbach, Lloyd Arthur, and Robert A. Heinlein. Of Worlds Beyond: The Science of Science Fiction Writing. Chicago: Advent Publishers, 1964.

MLA (9th ed.) Citation

Eshbach, Lloyd Arthur, and Robert A. Heinlein. Of Worlds Beyond: The Science of Science Fiction Writing. Advent Publishers, 1964.