United States. Army. Corps of Engineers, United States. Army. Office of the Chief of Engineers. Military Construction, & Waterways Experiment Station (U.S.). (1954). Effect of size of feet on sheepsfoot roller. Waterways Experiment Station.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United States. Army. Corps of Engineers, United States. Army. Office of the Chief of Engineers. Military Construction, و Waterways Experiment Station (U.S.). Effect of Size of Feet on Sheepsfoot Roller. Vicksburg, Miss.: Waterways Experiment Station, 1954.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)United States. Army. Corps of Engineers, et al. Effect of Size of Feet on Sheepsfoot Roller. Waterways Experiment Station, 1954.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.