APA (7th ed.) Citation

Walker, A. L., Roach, J. K., & Hanna, J. M. (1979). How to use adding and calculating machines (4th ed.). Gregg Division, McGraw-Hill.

Chicago Style (17th ed.) Citation

Walker, Arthur L., J. Kenneth Roach, and J. Marshall Hanna. How to Use Adding and Calculating Machines. 4th ed. New York: Gregg Division, McGraw-Hill, 1979.

MLA (9th ed.) Citation

Walker, Arthur L., et al. How to Use Adding and Calculating Machines. 4th ed. Gregg Division, McGraw-Hill, 1979.