(1991). Highway Research Sharing The Benefits, Proceedings Of The Conference The United States Strategic Highway Research Program Organized By The Institution Of Civil Engineers And Held In London On 29-31 October 1990 Organizing Committee; J. Porter ... [et Al.]. Thomas Telford.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Highway Research Sharing The Benefits, Proceedings Of The Conference The United States Strategic Highway Research Program Organized By The Institution Of Civil Engineers And Held In London On 29-31 October 1990 Organizing Committee; J. Porter ... [et Al.]. Thomas Telford, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Highway Research Sharing The Benefits, Proceedings Of The Conference The United States Strategic Highway Research Program Organized By The Institution Of Civil Engineers And Held In London On 29-31 October 1990 Organizing Committee; J. Porter ... [et Al.]. Thomas Telford, 1991.