Παραπομπή APA

(1968). Highway Research Abstracts. Washington: National Research Council, Transportation Research Board, Highway Research Information Service.

Παραπομπή Chicago Style

Highway Research Abstracts. Washington: National Research Council, Transportation Research Board, Highway Research Information Service, 1968.

Παραπομπή MLA

Highway Research Abstracts. Washington: National Research Council, Transportation Research Board, Highway Research Information Service, 1968.

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