APA (7th ed.) Citation

(2002). William T. Kvetkas, "The Last Days of Enigma," Cryptologic Almanac, March-April 2002, Top Secret/COMINT/X1.

Chicago Style (17th ed.) Citation

William T. Kvetkas, "The Last Days of Enigma," Cryptologic Almanac, March-April 2002, Top Secret/COMINT/X1. 2002.

MLA (8th ed.) Citation

William T. Kvetkas, "The Last Days of Enigma," Cryptologic Almanac, March-April 2002, Top Secret/COMINT/X1. 2002.

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