Não informado. (1961). Transportation journal. American Society of Traffic and Transportation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Transportation Journal. Louisville, Ky: American Society of Traffic and Transportation, 1961.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Transportation Journal. American Society of Traffic and Transportation, 1961.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.