The elementary principles of wireless telegraphy

Chicago citation style
Bangay, Raymond Dorrington, b. 1883. The elementary principles of wireless telegraphy. [1918?]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007650646. (Accessed November 17, 2018.)
APA citation style
Bangay, Raymond Dorrington, b. 1883, ([1918?]) The elementary principles of wireless telegraphy. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/007650646
MLA citation style
Bangay, Raymond Dorrington, b. 1883. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/007650646>.
Note: These citations are programmatically generated and may be incomplete.