Watts, G. R. (1984). Evaluation of conspicuity aids for pedal cyclists. Transport and Road Research Laboratory.
Chicago Style (17. basım) AtıfWatts, G. R. Evaluation of Conspicuity Aids for Pedal Cyclists. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1984.
MLA (9th ed.) AtıfWatts, G. R. Evaluation of Conspicuity Aids for Pedal Cyclists. Transport and Road Research Laboratory, 1984.
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