Our earth - night to twilight

Chicago citation style
Ferguson, George. Our earth - night to twilight. 1892. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008405137. (Accessed December 11, 2018.)
APA citation style
Ferguson, George, (1892) Our earth - night to twilight. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/008405137
MLA citation style
Ferguson, George. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/008405137>.
Note: These citations are programmatically generated and may be incomplete.