Chemistry of the rarer elements

Chicago citation style
Hopkins, B. S. (B. Smith), b. 1873. Chemistry of the rarer elements. [1923]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001033043. (Accessed November 17, 2018.)
APA citation style
Hopkins, B. S. (B. Smith), b. 1873, ([1923]) Chemistry of the rarer elements. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001033043
MLA citation style
Hopkins, B. S. (B. Smith), b. 1873. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/001033043>.
Note: These citations are programmatically generated and may be incomplete.