Andres, D. (1950). Comments on the Bell Report as it relates to the mining industry, and recommendations. [s.n.].
Chicago-referens (17:e uppl.)Andres, Demetrio. Comments on the Bell Report as It Relates to the Mining Industry, and Recommendations. Manila: [s.n.], 1950.
MLA-referens (9:e uppl.)Andres, Demetrio. Comments on the Bell Report as It Relates to the Mining Industry, and Recommendations. [s.n.], 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.