APA (7th ed.) Citation

Hanyok, R. J. (2005). Eavesdropping on hell: Historical guide to Western communications intelligence and the Holocaust, 1939-1945 (2nd ed.). Center for Cryptologic History, National Security Agency.

Chicago Style (17th ed.) Citation

Hanyok, Robert J. Eavesdropping on Hell: Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945. 2nd ed. [Fort George G. Meade, Md.]: Center for Cryptologic History, National Security Agency, 2005.

MLA (9th ed.) Citation

Hanyok, Robert J. Eavesdropping on Hell: Historical Guide to Western Communications Intelligence and the Holocaust, 1939-1945. 2nd ed. Center for Cryptologic History, National Security Agency, 2005.

Warning: These citations may not always be 100% accurate.