Petrographie (Gesteinskunde)

Chicago citation style
Bruhns, Willy, 1864-1929. Petrographie (Gesteinskunde). 1914. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/100638146. (Accessed November 21, 2018.)
APA citation style
Bruhns, Willy, 1864-1929, (1914) Petrographie (Gesteinskunde). Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/100638146
MLA citation style
Bruhns, Willy, 1864-1929. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/100638146>.
Note: These citations are programmatically generated and may be incomplete.