Não informado. (1951). Geographical bulletin. Department of Mines and Technical Surveys, Geographical Branch.
Chicago-Zitierstil (17. Ausg.)Não informado. Geographical Bulletin. Ottawa: Department of Mines and Technical Surveys, Geographical Branch, 1951.
MLA-Zitierstil (8. Ausg.)Não informado. Geographical Bulletin. Department of Mines and Technical Surveys, Geographical Branch, 1951.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.