Philippines (Commonwealth) Bureau of Mines & Philippines (Republic). Bureau of Mines. Stoping methods and costs in the gold mines of the Baguio district, Mountain Province, Philippines. [s.n.
Chicago-Zitierstil (17. Ausg.)Philippines (Commonwealth) Bureau of Mines und Philippines (Republic). Bureau of Mines. Stoping Methods and Costs in the Gold Mines of the Baguio District, Mountain Province, Philippines. Manila: [s.n.
MLA-Zitierstil (9. Ausg.)Philippines (Commonwealth) Bureau of Mines und Philippines (Republic). Bureau of Mines. Stoping Methods and Costs in the Gold Mines of the Baguio District, Mountain Province, Philippines. [s.n.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.