APA (7e ed.) Bronvermelding

Não informado. (1958). Information circular. Mines Branch, Department of Energy, Mines and Resources.

Chicago (17e ed.) Bronvermelding

Não informado. Information Circular. Ottawa: Mines Branch, Department of Energy, Mines and Resources, 1958.

MLA (8e ed.) Bronvermelding

Não informado. Information Circular. Mines Branch, Department of Energy, Mines and Resources, 1958.

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