APA (7th ed.) Citation

Laumer, K. (1968). The day before forever: And Thunderhead ([1st ed.].). Doubleday.

Chicago Style (17th ed.) Citation

Laumer, Keith. The Day Before Forever: And Thunderhead. [1st ed.]. Garden City, N.Y.: Doubleday, 1968.

MLA (9th ed.) Citation

Laumer, Keith. The Day Before Forever: And Thunderhead. [1st ed.]. Doubleday, 1968.

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