APA (7e ed.) Bronvermelding

Não informado. (2020). Special Report. California Division of Mines.

Chicago (17e ed.) Bronvermelding

Não informado. Special Report. San Francisco, Calif: California Division of Mines, 2020.

MLA (8e ed.) Bronvermelding

Não informado. Special Report. California Division of Mines, 2020.

Let op: Deze citaties zijn niet altijd 100% accuraat.