Não informado. (1970). Annual book of ASTM standards. American Society for Testing and Materials.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annual Book of ASTM Standards. Philadelphia, Pa: American Society for Testing and Materials, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annual Book of ASTM Standards. American Society for Testing and Materials, 1970.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.