Não informado. (2020). Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau. California State Mining Bureau.
Chicago-referens (17:e uppl.)Não informado. Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau. San Francisco, Calif: California State Mining Bureau, 2020.
MLA-referens (8:e uppl.)Não informado. Chapter of Report ... of the State Mineralogist Covering Mining in California and the Activities of the State Mining Bureau. California State Mining Bureau, 2020.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.