The Shakespearean ciphers examined : an analysis of cryptographic systems used as evidence that some author other than William Shakespeare wrote the plays commonly attributed to him

MLA

Friedman, William Frederick, and Elizebeth Smith Friedman. The Shakespearean Ciphers Examined : an Analysis of Cryptographic Systems Used As Evidence That Some Author Other Than William Shakespeare Wrote the Plays Commonly Attributed to Him. Cambridge [Eng.]: University Press, 1957.

APA

Friedman, W. Frederick, & Friedman, E. Smith. (1957). The Shakespearean ciphers examined : an analysis of cryptographic systems used as evidence that some author other than William Shakespeare wrote the plays commonly attributed to him. Cambridge [Eng.]: University Press.

Chicago

Friedman, William Frederick, and Elizebeth Smith Friedman. The Shakespearean Ciphers Examined: An Analysis of Cryptographic Systems Used As Evidence That Some Author Other Than William Shakespeare Wrote the Plays Commonly Attributed to Him. Cambridge [Eng.]: University Press, 1957.