Emmons, E. (1860). Geological and agricultural survey: To his Excellency, John W. Ellis, Governor of North-Carolina. John Spelman, Printer to the State.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Emmons, Ebenezer. Geological and Agricultural Survey: To His Excellency, John W. Ellis, Governor of North-Carolina. [Raleigh, N.C.]: John Spelman, Printer to the State, 1860.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Emmons, Ebenezer. Geological and Agricultural Survey: To His Excellency, John W. Ellis, Governor of North-Carolina. John Spelman, Printer to the State, 1860.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.