Asmussen, E. (1982). Safety concepts for the design of transport and traffic facilities for pedestrians, cyclists, children and disabled in urban areas. Institute for Road Safety Research SWOV, The Netherlands.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Asmussen, Erik. Safety Concepts for the Design of Transport and Traffic Facilities for Pedestrians, Cyclists, Children and Disabled in Urban Areas. Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1982.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Asmussen, Erik. Safety Concepts for the Design of Transport and Traffic Facilities for Pedestrians, Cyclists, Children and Disabled in Urban Areas. Institute for Road Safety Research SWOV, The Netherlands, 1982.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.