Langdon, M. G. (1982). Multiple choice models in transport assessment. Transport and Road Research Laboratory.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLangdon, M. G. Multiple Choice Models in Transport Assessment. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1982.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLangdon, M. G. Multiple Choice Models in Transport Assessment. Transport and Road Research Laboratory, 1982.
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