Coghill, Will H. & Bonardi, J. P. Approximate Quantitative Microscopy of Pulverized Ores, Including the Use of the Camera Lucida. [Washington D.C.]. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc66425/. Accessed September 21, 2014.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.