Cycles of gas and oil engines

Chicago citation style
Roots, James D. Cycles of gas and oil engines. 1899. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/101745533. (Accessed October 22, 2018.)
APA citation style
Roots, James D, (1899) Cycles of gas and oil engines. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/101745533
MLA citation style
Roots, James D. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/101745533>.
Note: These citations are programmatically generated and may be incomplete.