APA (7e ed.) Bronvermelding

Não informado. (2019). Industrial Minerals. Industrial Minerals Information.

Chicago (17e ed.) Bronvermelding

Não informado. Industrial Minerals. London: Industrial Minerals Information, 2019.

MLA (8e ed.) Bronvermelding

Não informado. Industrial Minerals. Industrial Minerals Information, 2019.

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