APA

U.S. Congress. Hearings [92-9], . (1971). Highway safety, design and operations. Wet weather performance. Studded tires. Lack of uniform traffic laws. Washington: U.S. Congress. Hearings [92-9].

Chicago

U.S. Congress. Hearings [92-9], . 1971. Highway safety, design and operations. Wet weather performance. Studded tires. Lack of uniform traffic laws. Washington: U.S. Congress. Hearings [92-9].

Harvard

U.S. Congress. Hearings [92-9], . (1971). Highway safety, design and operations. Wet weather performance. Studded tires. Lack of uniform traffic laws. Washington: U.S. Congress. Hearings [92-9].

MLA

U.S. Congress. Hearings [92-9], . Highway safety, design and operations. Wet weather performance. Studded tires. Lack of uniform traffic laws. Washington: U.S. Congress. Hearings [92-9]. 1971.