Não informado. Mechanical Engineering Report. National Research Council, Division of Mechanical Engineering.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Mechanical Engineering Report. Ottawa: National Research Council, Division of Mechanical Engineering.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Mechanical Engineering Report. National Research Council, Division of Mechanical Engineering.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.