Não informado. (2018). Professional Papers of the Signal Service. Chief Signal Officer.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Professional Papers of the Signal Service. Washington: Chief Signal Officer, 2018.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Professional Papers of the Signal Service. Chief Signal Officer, 2018.
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