Packard, C. A. (1945). Relay engineering: A reference book to guide engineers and others in the selection and use of electromagnetic relays (2d ed.). Struthers-Dunn, inc..
Chicago Style (17th ed.) CitationPackard, Charles A. Relay Engineering: A Reference Book to Guide Engineers and Others in the Selection and Use of Electromagnetic Relays. 2d ed. Philadelphia, Pa.: Struthers-Dunn, inc., 1945.
MLA (9th ed.) CitationPackard, Charles A. Relay Engineering: A Reference Book to Guide Engineers and Others in the Selection and Use of Electromagnetic Relays. 2d ed. Struthers-Dunn, inc., 1945.
Warning: These citations may not always be 100% accurate.