Brockenbrough, R. L. (2003). Highway engineering handbook. New York: McGraw- Hill.
Trích dẫn kiểu ChicagoBrockenbrough, Roger L. Highway Engineering Handbook. New York: McGraw- Hill, 2003.
Deismireacht MLABrockenbrough, Roger L. Highway Engineering Handbook. New York: McGraw- Hill, 2003.
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