Dyfyniad APA

Hopkins, W. J. (1894). Telephone lines and their properties (New ed., rev. and enl.). Longmans, Green.

Dyfyniad Arddull Chicago

Hopkins, William John. Telephone Lines and Their Properties. New ed., rev. and enl. New York: Longmans, Green, 1894.

Dyfyniad MLA

Hopkins, William John. Telephone Lines and Their Properties. New ed., rev. and enl. Longmans, Green, 1894.

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