APA (7th ed.) Citation

Gibson, W., & Sterling, B. (1991). The difference engine (1. VGSF ed.). VGSF.

Chicago Style (17th ed.) Citation

Gibson, William, and Bruce Sterling. The Difference Engine. 1. VGSF ed. London: VGSF, 1991.

MLA (9th ed.) Citation

Gibson, William, and Bruce Sterling. The Difference Engine. 1. VGSF ed. VGSF, 1991.