Não informado. (1951). Geographical bulletin. Department of Mines and Technical Surveys, Geographical Branch.
Chicago-referens (17:e uppl.)Não informado. Geographical Bulletin. Ottawa: Department of Mines and Technical Surveys, Geographical Branch, 1951.
MLA-referens (8:e uppl.)Não informado. Geographical Bulletin. Department of Mines and Technical Surveys, Geographical Branch, 1951.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.