The International Statistical Institute. (1991). Bulletin of The International Statistical Institute: Proceedings of the 48th Session = Bulletin de L'Institut International de Statistique : Actes de La 48eme Session (1 st. ed.). The International Statistical Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)The International Statistical Institute. Bulletin of The International Statistical Institute: Proceedings of the 48th Session = Bulletin De L'Institut International De Statistique : Actes De La 48eme Session. 1 st. ed. Cairo: The International Statistical Institute, 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)The International Statistical Institute. Bulletin of The International Statistical Institute: Proceedings of the 48th Session = Bulletin De L'Institut International De Statistique : Actes De La 48eme Session. 1 st. ed. The International Statistical Institute, 1991.