International Computing Symposium, Liege, Belgium, Association for Computing Machinery, European Cooperation in Informatics (Organization), Morlet, E., & Ribbens, D. International Computing Symposium, 1977: Proceedings of the International Computing Symposium, 1977, Liege, Belgium, 4-7 April 1977.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Computing Symposium, Liege, Belgium, Association for Computing Machinery, European Cooperation in Informatics (Organization), E. Morlet, و D. Ribbens. International Computing Symposium, 1977: Proceedings of the International Computing Symposium, 1977, Liege, Belgium, 4-7 April 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Computing Symposium, Liege, Belgium, et al. International Computing Symposium, 1977: Proceedings of the International Computing Symposium, 1977, Liege, Belgium, 4-7 April 1977.