Não informado. (1971). Mineral Bulletin. Energy, Mines and Resources Canada, Minerals.
Style de citation Chicago (17e éd.)Não informado. Mineral Bulletin. Ottawa: Energy, Mines and Resources Canada, Minerals, 1971.
Style de citation MLA (8e éd.)Não informado. Mineral Bulletin. Energy, Mines and Resources Canada, Minerals, 1971.
Attention : ces citations peuvent ne pas être correctes à 100%.