United States. Forest Service. (1936). The western range: Letter from the Secretary of Agriculture transmitting in response to Senate resolution no. 289 : a report on the Western Range - a great but neglected natural resource. U.S. Govt. Print. Off..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Forest Service. The Western Range: Letter from the Secretary of Agriculture Transmitting in Response to Senate Resolution No. 289 : A Report on the Western Range - a Great but Neglected Natural Resource. Washington: U.S. Govt. Print. Off., 1936.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Forest Service. The Western Range: Letter from the Secretary of Agriculture Transmitting in Response to Senate Resolution No. 289 : A Report on the Western Range - a Great but Neglected Natural Resource. U.S. Govt. Print. Off., 1936.