Não informado. (2020). Report of the State Mineralogist. California Division of Mines.
Chicago-viite (17. p.)Não informado. Report of the State Mineralogist. San Francisco, Calif: California Division of Mines, 2020.
MLA-viite (8. p.)Não informado. Report of the State Mineralogist. California Division of Mines, 2020.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.