APA (7th ed.) Citation

Moore, D. T., & Waller, M. (1965). Cloak and cipher. George G. Harrop.

Chicago Style (17th ed.) Citation

Moore, Dan Tyler, and Martha Waller. Cloak and Cipher. London, England: George G. Harrop, 1965.

MLA (8th ed.) Citation

Moore, Dan Tyler, and Martha Waller. Cloak and Cipher. George G. Harrop, 1965.