Παραπομπή APA

(1962). Traffic signs for motorways. London: Her Majesty's Stationery Office.

Παραπομπή Chicago Style

Traffic Signs for Motorways. London: Her Majesty's Stationery Office, 1962.

Παραπομπή MLA

Traffic Signs for Motorways. London: Her Majesty's Stationery Office, 1962.

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