National Corrugated Steel Pipe Association (U.S.), Corrpro Companies, Bushman, J. B., & Blonska, F. (1988). Condition and corrosion survey on corrugated steel storm sewer and culvert pipe: Second interim report, September, 1988.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNational Corrugated Steel Pipe Association (U.S.), Corrpro Companies, James B. Bushman, এবং Frank Blonska. Condition and Corrosion Survey on Corrugated Steel Storm Sewer and Culvert Pipe: Second Interim Report, September, 1988. Washington, D.C. (2011 Eye St. N.W., Washington 20006) : The Association, 1988.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিNational Corrugated Steel Pipe Association (U.S.), et al. Condition and Corrosion Survey on Corrugated Steel Storm Sewer and Culvert Pipe: Second Interim Report, September, 1988. 1988.