Amstutz, G. C. (1971). Glossary of mining geology: In English, Spanish, French, and German. Ferdinand Enke Verlag.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmstutz, Guhart C. Glossary of Mining Geology: In English, Spanish, French, and German. Stuttgart: Ferdinand Enke Verlag, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmstutz, Guhart C. Glossary of Mining Geology: In English, Spanish, French, and German. Ferdinand Enke Verlag, 1971.
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