Asmussen, E. (1982). Safety: The challenge of today for transportation safety in the future. Institute for Road Safety Research SWOV, The Netherlands.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAsmussen, Erik. Safety: The Challenge of Today for Transportation Safety in the Future. Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAsmussen, Erik. Safety: The Challenge of Today for Transportation Safety in the Future. Institute for Road Safety Research SWOV, The Netherlands, 1982.
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