IFLA International Office for UAP, International Federation of Library Associations and Institutions. Section on Acquisition and Exchange, International Federation of Library Associations and Institutions. Section on Serial Publications, Ligue des bibliotheques europeennes de recherche, & Montag, U. (1992). Will the chain break?: Differential pricing as part of a new pricing structure for research literature and its consequences for the future of scholarly communication : proceedings of an IFLA Workshop, Stockholm, 23 August 1990. Saur.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)IFLA International Office for UAP, International Federation of Library Associations and Institutions. Section on Acquisition and Exchange, International Federation of Library Associations and Institutions. Section on Serial Publications, Ligue des bibliotheques europeennes de recherche, و Ulrich Montag. Will the Chain Break?: Differential Pricing as Part of a New Pricing Structure for Research Literature and Its Consequences for the Future of Scholarly Communication : Proceedings of an IFLA Workshop, Stockholm, 23 August 1990. Munchen ; New York: Saur, 1992.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)IFLA International Office for UAP, et al. Will the Chain Break?: Differential Pricing as Part of a New Pricing Structure for Research Literature and Its Consequences for the Future of Scholarly Communication : Proceedings of an IFLA Workshop, Stockholm, 23 August 1990. Saur, 1992.