Osborn, J., Jensen, D., & Draffan, G. (1995). Railroads & clearcuts: Legacy of Congress's 1864 Northern Pacific Railroad land grant, a photographic essay. Inland Empire Public Lands Council.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Osborn, John, Derrick Jensen, و George Draffan. Railroads & Clearcuts: Legacy of Congress's 1864 Northern Pacific Railroad Land Grant, a Photographic Essay. Spokane, Wash.: Inland Empire Public Lands Council, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Osborn, John, et al. Railroads & Clearcuts: Legacy of Congress's 1864 Northern Pacific Railroad Land Grant, a Photographic Essay. Inland Empire Public Lands Council, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.