Não informado. (2004). Transportation Research News. National Research Council, Transportation Research Board.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Transportation Research News. Washington: National Research Council, Transportation Research Board, 2004.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Transportation Research News. National Research Council, Transportation Research Board, 2004.
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