Ahmad, M., Chemin, Y. H., Asif, S., & Ali, S. (1998). GIS metadata for an irrigation system, volume I: Chishtian Sub-Division. International Irrigation Management Institute.
Citação do estilo Chicago (17ª ed.)Ahmad, Mobin-ud-Din, Yann H. Chemin, S. Asif, e S. Ali. GIS Metadata for an Irrigation System, Volume I: Chishtian Sub-Division. International Irrigation Management Institute, 1998.
Citação MLA (8ª ed.)Ahmad, Mobin-ud-Din, et al. GIS Metadata for an Irrigation System, Volume I: Chishtian Sub-Division. International Irrigation Management Institute, 1998.
Citação IICA/CATIEAhmad, M., Chemin, Y. H., Asif, S., ; Ali, S. 1998. GIS metadata for an irrigation system, volume I: Chishtian Sub-Division. International Irrigation Management Institute.