APA
National Academy of Science Washington, . (1981). Highway safety: Roadway improvements, Accident rates, and Bicycle programs. Washington: National Academy of Science Washington.
Chicago
National Academy of Science Washington, . 1981. Highway safety: Roadway improvements, Accident rates, and Bicycle programs. Washington: National Academy of Science Washington.
Harvard
National Academy of Science Washington, . (1981). Highway safety: Roadway improvements, Accident rates, and Bicycle programs. Washington: National Academy of Science Washington.
MLA
National Academy of Science Washington, . Highway safety: Roadway improvements, Accident rates, and Bicycle programs. Washington: National Academy of Science Washington. 1981.
