Griggs, J. Mines of Chihuhua 1907: History, geology, statistics, mining companies / directory by Jorge Griggs.
Cita Chicago Style (17a ed.)Griggs, Jorge. Mines of Chihuhua 1907: History, Geology, Statistics, Mining Companies / Directory by Jorge Griggs. Chihuahua : s.n., 1907.
Cita MLA (8a ed.)Griggs, Jorge. Mines of Chihuhua 1907: History, Geology, Statistics, Mining Companies / Directory by Jorge Griggs.
Precaución: Estas citas no son 100% exactas.