Não informado. (2022). American Mining Congress Journal. American Mining Congress.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. American Mining Congress Journal. Washington: American Mining Congress, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. American Mining Congress Journal. American Mining Congress, 2022.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.