(1993). Balancing engineering, education, law enforcement, and encouragement / National Bicycling and Walking Study.
Chicago Style (17. basım) AtıfBalancing Engineering, Education, Law Enforcement, and Encouragement / National Bicycling and Walking Study. 1993.
MLA (9th ed.) AtıfBalancing Engineering, Education, Law Enforcement, and Encouragement / National Bicycling and Walking Study. 1993.
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