Friedman, W. F., & Friedman, E. S. (1957). The Shakespearean ciphers examined : an analysis of cryptographic systems used as evidence that some other author other than William Shakespeare wrote the plays commonly attributed to him / by William F. Friedman & Elizebeth S. Friedman: An analysis of cryptographic systems used as evidence that some other author other than William Shakespeare wrote the plays commonly attributed to him. Cambridge U.P.
Chicago Style (17th ed.) CitationFriedman, William Frederick, and Elizebeth Smith Friedman. The Shakespearean Ciphers Examined : An Analysis of Cryptographic Systems Used as Evidence That Some Other Author Other than William Shakespeare Wrote the Plays Commonly Attributed to Him / by William F. Friedman & Elizebeth S. Friedman: An Analysis of Cryptographic Systems Used as Evidence That Some Other Author Other than William Shakespeare Wrote the Plays Commonly Attributed to Him. Cambridge: Cambridge U.P, 1957.
MLA (9th ed.) CitationFriedman, William Frederick, and Elizebeth Smith Friedman. The Shakespearean Ciphers Examined : An Analysis of Cryptographic Systems Used as Evidence That Some Other Author Other than William Shakespeare Wrote the Plays Commonly Attributed to Him / by William F. Friedman & Elizebeth S. Friedman: An Analysis of Cryptographic Systems Used as Evidence That Some Other Author Other than William Shakespeare Wrote the Plays Commonly Attributed to Him. Cambridge U.P, 1957.