Cita APA

Smith, L. D., & Smith, L. D. (1943). Cryptography: The science of secret writing. New York, New York: Dover.

Citación estilo Chicago

Smith, Laurence Dwight, y Laurence Dwight Smith. Cryptography: The Science of Secret Writing. New York, New York: Dover, 1943.

Cita MLA

Smith, Laurence Dwight, y Laurence Dwight Smith. Cryptography: The Science of Secret Writing. New York, New York: Dover, 1943.