APA-Zitierstil (7. Ausg.)

Barker, W. G. (1978). The history of codes and ciphers in the United States prior to World War I. Aegean Park Press.

Chicago-Zitierstil (17. Ausg.)

Barker, Wayne G. The History of Codes and Ciphers in the United States Prior to World War I. Laguna Hills, California: Aegean Park Press, 1978.

MLA-Zitierstil (9. Ausg.)

Barker, Wayne G. The History of Codes and Ciphers in the United States Prior to World War I. Aegean Park Press, 1978.