Thomas, B. E. (1949). Ore deposits of the Wallapai district, Arizona.
Cita Chicago Style (17a ed.)Thomas, Blakemore E. Ore Deposits of the Wallapai District, Arizona. 1949.
Cita MLA (8a ed.)Thomas, Blakemore E. Ore Deposits of the Wallapai District, Arizona. 1949.
Precaución: Estas citas no son 100% exactas.