Não informado. (2001). Special Report. California Division of Mines and Geology.
Style de citation Chicago (17e éd.)Não informado. Special Report. San Francisco, Calif: California Division of Mines and Geology, 2001.
Style de citation MLA (8e éd.)Não informado. Special Report. California Division of Mines and Geology, 2001.
Attention : ces citations peuvent ne pas être correctes à 100%.