Lam, R. Highway design and traffic safety engineering handbook / Ruediger Lam. McGraw-Hill.
Trích dẫn kiểu ChicagoLam, Ruediger. Highway Design and Traffic Safety Engineering Handbook / Ruediger Lam. McGraw-Hill.
Trích dẫn MLALam, Ruediger. Highway Design and Traffic Safety Engineering Handbook / Ruediger Lam. McGraw-Hill.
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