Barrett, J. P. (1894). Electricity at the Columbian Exposition: Including an account of the exhibits in the Electricity Building, the power plant in Machinery Hall, the arc and incandescent lighting of the grounds and buildings ... etc. R.R. Donnelley.
Παραπομπή σε μορφή Chicago (17η εκδ.)Barrett, John Patrick. Electricity at the Columbian Exposition: Including an Account of the Exhibits in the Electricity Building, the Power Plant in Machinery Hall, the Arc and Incandescent Lighting of the Grounds and Buildings ... Etc. Chicago: R.R. Donnelley, 1894.
Παραπομπή σε μορφή MLA (8th εκδ.)Barrett, John Patrick. Electricity at the Columbian Exposition: Including an Account of the Exhibits in the Electricity Building, the Power Plant in Machinery Hall, the Arc and Incandescent Lighting of the Grounds and Buildings ... Etc. R.R. Donnelley, 1894.