Não informado. Steel casting abstracts. British Steel Casting Research Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Steel Casting Abstracts. Sheffield, Inglaterra: British Steel Casting Research Association.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Steel Casting Abstracts. British Steel Casting Research Association.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.