Allen, R. G.; L. S. Pereira; D. Raes; and M. Smith. (1998). Crop evapotranspiration: Guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56. Food and Agriculture Organization. Rome.
Bulsink, F., A. Hoekstra, M.J. Booij, (2010). The water footprint of Indonesian provinces related to the consumption of crop products. Hydrol. Earth Syst. Sci. (14), PP 119–128.
Chapagain, A. K. and A. Y. Hoekstra. (2004). Water footprints of nations. Available at: www. waterfootprint.org /Reports/ Report 16 Vol1.pdf. Accessed on 30 Feb 2013, Value of Water Research Report Series No (16), Pages 80, UNESCO-IHE, and Delft, Netherlands.
Chapagain, A.K. and A.Y. Hoekstra. (2003). Virtual water trade: A quantification of virtual water flows between nations in relation to international trade of livestock and livestock products. In: Hoekstra (ED) .Virtual water trade: Proceedings of the International Expert Meeting on Virtual Water Trade. Value of Water Research Report Series No. (12), pages 248, UNESCO-IHE Institute for Water Education, Delft, the Netherlands.
Felix, G. (2012). The Swiss Water Footprint Report: A global picture of Swiss water dependence. Pages 36. Available at: http://www.WWF-SDC-2012 Swiss water footprint.pdf. Accessed on 23 Feb 2013.
Gerbens-Leenes P. W.; and A.Y. Hoekstra. (2008). Business water footprint accounting: A tool to assess how production of goods and services impacts. Available at: http://www.waterfootprin t.org/Reports/Report27 .Accessed on 21 Sep 2014.
Hoekstra, A.Y., A.K. Chapagain, M.M. Aldaya, and M.M. Mekonnen. (2011). The water footprint assessment manual. Available at:
http://www.waterfootprint.org/downloads/ Accessed on 25 Jan.2013. Water Footprint Network 2011.Pages 228.
Hoekstra, A. Y. and P. Q. Hung. (2005). Globalisation of water resources: international virtual water flows in relation to crop trade, Global Environmental Change 15(1), PP 45-56.
Hoekstra, A.Y. and P.Q. Hung. (2002). A quantification of virtual water flows between nations in relation to international crop trade. Value of Water Research Report Series No (11), PP 1-120, UNESCO-IHE Institute for Water Education, Delft, the Netherlands.
Liu, J. and H.H.G. Savenije, (2008). Food consumption patterns and their effect on water requirement in China. Hydrol. Earth Syst. Sci. (12), PP 887–898.
Van Oel, P., M. Mekonnen, and A. Hoekstra, (2009). The external water footprint of the Netherlands: geographically-explicit quantification and impact assessment. Ecol. Econ. (69), PP 82–92.
Verma, S., D.A. Kampman, P. van der Zaag, A.Y. Hoekstra, (2009). Going against the flow: a critical analysis of inter-state virtual water trade in the context of India’s National River Linking Program. Physical Chemical Earth 34, PP 261–269