American Society for Testing and Materials. Committee C-1 on Cement, Farkas, E., & Klieger, P. (1987). Uniformity of cement strength: A symposium sponsored by ASTM Committee C-1 on Cement, Louisville, KY, 19 June 1986. ASTM.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Society for Testing and Materials. Committee C-1 on Cement, Emery Farkas, و Paul Klieger. Uniformity of Cement Strength: A Symposium Sponsored by ASTM Committee C-1 on Cement, Louisville, KY, 19 June 1986. Philadelphia, PA: ASTM, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)American Society for Testing and Materials. Committee C-1 on Cement, et al. Uniformity of Cement Strength: A Symposium Sponsored by ASTM Committee C-1 on Cement, Louisville, KY, 19 June 1986. ASTM, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.