Kobar, K. (1993). Application of geographic information systems in hydrology and water resources management: Proceedings of an international conference held in Vienna, Austria, from 19-22 April 1993. International Association of Hydrological Sciences.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kobar, K. Application of Geographic Information Systems in Hydrology and Water Resources Management: Proceedings of an International Conference Held in Vienna, Austria, from 19-22 April 1993. Oxfordshire, Eng: International Association of Hydrological Sciences, 1993.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Kobar, K. Application of Geographic Information Systems in Hydrology and Water Resources Management: Proceedings of an International Conference Held in Vienna, Austria, from 19-22 April 1993. International Association of Hydrological Sciences, 1993.