APA (7th ed.) Citation

Walker, A. L. (1960). How to use adding and calculating machines: Ten-key, full-key, rotary, key-driven (2d ed.). Gregg Pub. Division, McGraw-Hill.

Chicago Style (17th ed.) Citation

Walker, Arthur Lee. How to Use Adding and Calculating Machines: Ten-key, Full-key, Rotary, Key-driven. 2d ed. New York: Gregg Pub. Division, McGraw-Hill, 1960.

MLA (9th ed.) Citation

Walker, Arthur Lee. How to Use Adding and Calculating Machines: Ten-key, Full-key, Rotary, Key-driven. 2d ed. Gregg Pub. Division, McGraw-Hill, 1960.