Wheeler, G. M. (1879). Sketch indicating a distribution of the territorial domain of the United States into districts favorable to the operations of parties prosecuting general government surveys. U.S. Army Corps of Engineers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wheeler, George M. Sketch Indicating a Distribution of the Territorial Domain of the United States into Districts Favorable to the Operations of Parties Prosecuting General Government Surveys. [Washington, D.C.]: U.S. Army Corps of Engineers, 1879.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wheeler, George M. Sketch Indicating a Distribution of the Territorial Domain of the United States into Districts Favorable to the Operations of Parties Prosecuting General Government Surveys. U.S. Army Corps of Engineers, 1879.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.