APA (7th ed.) Citation

International Symposium [on] Hydrological Basis of Ecologically Sound Management of Soil and Groundwater (1991 : Vienna), General Assembly of the International Union of Geodesy and Geophysics (20th : 1991 : Vienna), Nachtnebel, H. P., & Kovar, K. (1991). Hydrological basis of ecological sound management of soil and groundwater. International Association of Hydrological Sciences.

Chicago Style (17th ed.) Citation

International Symposium [on] Hydrological Basis of Ecologically Sound Management of Soil and Groundwater (1991 : Vienna), General Assembly of the International Union of Geodesy and Geophysics (20th : 1991 : Vienna), H. P. Nachtnebel, and K. Kovar. Hydrological Basis of Ecological Sound Management of Soil and Groundwater. [Wallingford, Oxfordshire: International Association of Hydrological Sciences, 1991.

MLA (9th ed.) Citation

International Symposium [on] Hydrological Basis of Ecologically Sound Management of Soil and Groundwater (1991 : Vienna), et al. Hydrological Basis of Ecological Sound Management of Soil and Groundwater. International Association of Hydrological Sciences, 1991.