APA (7th ed.) Citation

Leach, H. W., & Beakley, G. C. (1953). The slide rule. Macmillan.

Chicago Style (17th ed.) Citation

Leach, H. W., and George C. Beakley. The Slide Rule. New York: Macmillan, 1953.

MLA (8th ed.) Citation

Leach, H. W., and George C. Beakley. The Slide Rule. Macmillan, 1953.