Não informado. (2020). Report of the State Mineralogist. California Division of Mines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Report of the State Mineralogist. San Francisco, Calif: California Division of Mines, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Report of the State Mineralogist. California Division of Mines, 2020.
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