Organization for Economic Cooperation and Development. Steering Committee for Road Research. (1972). Road research publications, 1968-1972: Construction, safety, traffic. Organisation for Economic Co-operation and Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrganization for Economic Cooperation and Development. Steering Committee for Road Research. Road Research Publications, 1968-1972: Construction, Safety, Traffic. [Paris]: Organisation for Economic Co-operation and Development, 1972.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrganization for Economic Cooperation and Development. Steering Committee for Road Research. Road Research Publications, 1968-1972: Construction, Safety, Traffic. Organisation for Economic Co-operation and Development, 1972.
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