APA (7th ed.) Citation

Friedman, W. F. (1977). History of the use of codes. Aegean Park Press.

Chicago Style (17th ed.) Citation

Friedman, William F. History of the Use of Codes. Laguna Hills, California: Aegean Park Press, 1977.

MLA (9th ed.) Citation

Friedman, William F. History of the Use of Codes. Aegean Park Press, 1977.