Ohlson, K. G. (1988). Method and means used in production of asphalt mix: Theory of suspension, mixing method, method of testing, method of analysis. Trafikteknik, Tekniska Högskolan i Lund.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ohlson, Karl Gunnar. Method and Means Used in Production of Asphalt Mix: Theory of Suspension, Mixing Method, Method of Testing, Method of Analysis. Lund, Sweden: Trafikteknik, Tekniska Högskolan i Lund, 1988.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ohlson, Karl Gunnar. Method and Means Used in Production of Asphalt Mix: Theory of Suspension, Mixing Method, Method of Testing, Method of Analysis. Trafikteknik, Tekniska Högskolan i Lund, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.