International Commission of Hydrological Sciences, Kovar, K., & Soveri, J. (1994). Groundwater quality management: Proceedings of an international conference held at Tallinn, Estonia, from 6-9 September 1993 ; jointly organized by the International Commission of Hydrological Sciences, and the Institute of Ecology, Tallinn Estonia (17th ed.). International Association of Hydrological Sciences.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Commission of Hydrological Sciences, K. Kovar, και J. Soveri. Groundwater Quality Management: Proceedings of an International Conference Held at Tallinn, Estonia, from 6-9 September 1993 ; Jointly Organized by the International Commission of Hydrological Sciences, and the Institute of Ecology, Tallinn Estonia. 17th ed. Oxfordshire, Eng: International Association of Hydrological Sciences, 1994.
Παραπομπή σε μορφή MLA (9th εκδ.)International Commission of Hydrological Sciences, et al. Groundwater Quality Management: Proceedings of an International Conference Held at Tallinn, Estonia, from 6-9 September 1993 ; Jointly Organized by the International Commission of Hydrological Sciences, and the Institute of Ecology, Tallinn Estonia. 17th ed. International Association of Hydrological Sciences, 1994.