APA (7th ed.) Citation

Heinlein, R. A. (2014). The past through tomorrow: SF gateway omnibus. Berkley.

Chicago Style (17th ed.) Citation

Heinlein, Robert A. The Past Through Tomorrow: SF Gateway Omnibus. New York: Berkley, 2014.

MLA (9th ed.) Citation

Heinlein, Robert A. The Past Through Tomorrow: SF Gateway Omnibus. Berkley, 2014.

Warning: These citations may not always be 100% accurate.