Organisation for Economic Co-operation and Development. (1971). Lighting, visibility and accidents.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrganisation for Economic Co-operation and Development. Lighting, Visibility and Accidents. [Paris], 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOrganisation for Economic Co-operation and Development. Lighting, Visibility and Accidents. 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.