National Research Council (U.S.). Transportation Research Board. (1993). Lightweight artificial and waste materials for embankments over soft soils. National Academy Press, Transportation Research Board.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Transportation Research Board. Lightweight Artificial and Waste Materials for Embankments over Soft Soils. Washington, D.C: National Academy Press, Transportation Research Board, 1993.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Research Council (U.S.). Transportation Research Board. Lightweight Artificial and Waste Materials for Embankments over Soft Soils. National Academy Press, Transportation Research Board, 1993.
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