Não informado. (2010). The School of Mines Quarterly. Columbia University.
Chicago-referens (17:e uppl.)Não informado. The School of Mines Quarterly. New York: Columbia University, 2010.
MLA-referens (8:e uppl.)Não informado. The School of Mines Quarterly. Columbia University, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.