Não informado. (1948). Mineral Information Service. California Division of Mines and Geology.
Chicagoスタイル(17版)引用形式Não informado. Mineral Information Service. Sacramento, Calif: California Division of Mines and Geology, 1948.
MLA(8版)引用形式Não informado. Mineral Information Service. California Division of Mines and Geology, 1948.
警告: この引用は必ずしも正確ではありません.