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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.