APA ציטוט

O'Harra, C. C. (1899). Notes on the geology and mineral deposits of a portion of the southern Black Hills. South Dakota School of Mines.

Chicago Style (17th ed.) Citation

O'Harra, Cleophas C. Notes on the Geology and Mineral Deposits of a Portion of the Southern Black Hills. Rapid City, S. D.: South Dakota School of Mines, 1899.

ציטוט MLA

O'Harra, Cleophas C. Notes on the Geology and Mineral Deposits of a Portion of the Southern Black Hills. South Dakota School of Mines, 1899.