Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (8ú heag.)

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

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