Friedman, W. F., & Friedman, E. 1. . j. a. (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. University Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Friedman, William Frderick, và Elizabeth 1893- joint auth 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.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)Friedman, William Frderick, và Elizabeth 1893- joint auth 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. University Press, 1957.