Colwill, D. M., Hickman, A. J., & Waterfield, V. H. (1983). Atmospheric pollution from vehicle emissions: Measurements near the tunnel portal at London (Heathrow) Airport. Transport and Road Research Laboratory.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColwill, D. M., A. J. Hickman, और Victoria H. Waterfield. Atmospheric Pollution from Vehicle Emissions: Measurements Near the Tunnel Portal at London (Heathrow) Airport. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1983.
एमएलए (9वां संस्करण) प्रशस्ति पत्रColwill, D. M., et al. Atmospheric Pollution from Vehicle Emissions: Measurements Near the Tunnel Portal at London (Heathrow) Airport. Transport and Road Research Laboratory, 1983.
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