Não informado. (2020). Monthly Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau. California State Mining Bureau.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Monthly Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau. Sacramento, Calif: California State Mining Bureau, 2020.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Monthly Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau. California State Mining Bureau, 2020.
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