Phelps, H. P. (1893). The World's fair via Baltimore & Ohio R.R.: The sightseeing route to Chicago through the greatest cities, over the grandest mountains, where railway travel reaches the sublime. Passenger Dept., Baltimore & Ohio R.R..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Phelps, Henry P. The World's Fair via Baltimore & Ohio R.R.: The Sightseeing Route to Chicago Through the Greatest Cities, over the Grandest Mountains, Where Railway Travel Reaches the Sublime. Baltimore, Md.: Passenger Dept., Baltimore & Ohio R.R., 1893.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Phelps, Henry P. The World's Fair via Baltimore & Ohio R.R.: The Sightseeing Route to Chicago Through the Greatest Cities, over the Grandest Mountains, Where Railway Travel Reaches the Sublime. Passenger Dept., Baltimore & Ohio R.R., 1893.