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.
Chicago-viite (17. p.)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.
MLA-viite (8. p.)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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