International Workshop on Expert Systems in Engineering, Gottlob, G., & Nejdl, W. (1990). Expert systems in engineering: Principles and applications : international workshop, Vienna, Austria, September 24-26, 1990, proceedings. Springer-Verlag.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Workshop on Expert Systems in Engineering, G. Gottlob, و W. Nejdl. Expert Systems in Engineering: Principles and Applications : International Workshop, Vienna, Austria, September 24-26, 1990, Proceedings. Berlin ; New York: Springer-Verlag, 1990.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Workshop on Expert Systems in Engineering, et al. Expert Systems in Engineering: Principles and Applications : International Workshop, Vienna, Austria, September 24-26, 1990, Proceedings. Springer-Verlag, 1990.