Ball, D. (1993). Signals intelligence in the post-cold war era: Developments in the Asia-Pacific region. Institute of Southeast Asian Studies.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBall, Desmond. Signals Intelligence in the Post-cold War Era: Developments in the Asia-Pacific Region. Singapore: Institute of Southeast Asian Studies, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBall, Desmond. Signals Intelligence in the Post-cold War Era: Developments in the Asia-Pacific Region. Institute of Southeast Asian Studies, 1993.
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