Hopkins, W. J. (1901). Telephone lines and their properties (New ed., rev. and enl.). Longmans, Green, and co..
Chicago Style (17th ed.) CitationHopkins, William John. Telephone Lines and Their Properties. New ed., rev. and enl. New York [etc.]: Longmans, Green, and co., 1901.
MLA (9th ed.) CitationHopkins, William John. Telephone Lines and Their Properties. New ed., rev. and enl. Longmans, Green, and co., 1901.
Warning: These citations may not always be 100% accurate.