Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

National Corrugated Steel Pipe Association (U.S.), Corrpro Companies, James B. Bushman, i 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.

Cita MLA (9th ed.)

National 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.

Atenció: Aquestes cites poden no estar 100% correctes.