Não informado. (2002). California Journal of Mines and Geology. State of California, Department of Natural Resources, Division of Mines.
Citação do estilo Chicago (17ª ed.)Não informado. California Journal of Mines and Geology. San Francisco, Calif: State of California, Department of Natural Resources, Division of Mines, 2002.
Citação MLA (8ª ed.)Não informado. California Journal of Mines and Geology. State of California, Department of Natural Resources, Division of Mines, 2002.
警告：这些引文格式不一定是100％准确.