Observations on the rare earths

Chicago citation style
Engle, Edgar Wallace. Observations on the rare earths. 1916]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001033039. (Accessed November 14, 2018.)
APA citation style
Engle, Edgar Wallace, (1916]) Observations on the rare earths. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001033039
MLA citation style
Engle, Edgar Wallace. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/001033039>.
Note: These citations are programmatically generated and may be incomplete.