Stevens, I. I., & Humphreys, A. A. (1859). Explorations and surveys for a rail road route from the Mississippi R. to the Pacific Ocean, War Department: Routes near the 47th and 49th parallels : profiles : from explorations and surveys made under the direction of the Hon. Jefferson Davis, secretary of war. War Dept..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Stevens, Isaac Ingalls, و A. A. Humphreys. Explorations and Surveys for a Rail Road Route from the Mississippi R. to the Pacific Ocean, War Department: Routes Near the 47th and 49th Parallels : Profiles : From Explorations and Surveys Made Under the Direction of the Hon. Jefferson Davis, Secretary of War. [Washington, D.C.]: War Dept., 1859.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Stevens, Isaac Ingalls, و A. A. Humphreys. Explorations and Surveys for a Rail Road Route from the Mississippi R. to the Pacific Ocean, War Department: Routes Near the 47th and 49th Parallels : Profiles : From Explorations and Surveys Made Under the Direction of the Hon. Jefferson Davis, Secretary of War. War Dept., 1859.