APA (7th ed.) Citation

Wellman, M. W. (1957). Twice in time. Avalon Books.

Chicago Style (17th ed.) Citation

Wellman, Manly Wade. Twice in Time. New York: Avalon Books, 1957.

MLA (9th ed.) Citation

Wellman, Manly Wade. Twice in Time. Avalon Books, 1957.

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