International Hydrological Programme, Nederlandse Centrale Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek. Commissie voor Hydrologisch Onderzoek, Committee of the European Network of Experimental and Representative Basins, Conference on Hydrological Research Basins and the Environment, Hooghart, J. C., Posthumus, C. W. S., & Warmerdam, P. M. M. (1990). Hydrological research basins and the environment: International conference, Wageningen, The Netherlands, 24-28 September, 1990. TNO.
Citação do estilo Chicago (17ª ed.)International Hydrological Programme, Nederlandse Centrale Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek. Commissie voor Hydrologisch Onderzoek, Committee of the European Network of Experimental and Representative Basins, Conference on Hydrological Research Basins and the Environment, J. C. Hooghart, C. W. S. Posthumus, e P. M. M. Warmerdam. Hydrological Research Basins and the Environment: International Conference, Wageningen, The Netherlands, 24-28 September, 1990. The Hague: TNO, 1990.
Citação MLA (8ª ed.)International Hydrological Programme, et al. Hydrological Research Basins and the Environment: International Conference, Wageningen, The Netherlands, 24-28 September, 1990. TNO, 1990.