Não informado. (1939). Geological survey paper: Mines and geology branch. Department of Mines and Technical Surveys, Geological Survey.
Chicago-Zitierstil (17. Ausg.)Não informado. Geological Survey Paper: Mines and Geology Branch. Ottawa: Department of Mines and Technical Surveys, Geological Survey, 1939.
MLA-Zitierstil (8. Ausg.)Não informado. Geological Survey Paper: Mines and Geology Branch. Department of Mines and Technical Surveys, Geological Survey, 1939.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.