Wegman, F. C. M. (1985). Advisory speed limits: Should they be expanded or not? Institute for Road Safety Research SWOV, The Netherlands.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWegman, F. C. M. Advisory Speed Limits: Should They Be Expanded or Not? Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWegman, F. C. M. Advisory Speed Limits: Should They Be Expanded or Not? Institute for Road Safety Research SWOV, The Netherlands, 1985.
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