Não informado. (2010). Report of the State Mineralogist. California State Mining Bureau.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Report of the State Mineralogist. Sacramento, Calif: California State Mining Bureau, 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Report of the State Mineralogist. California State Mining Bureau, 2010.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.