1. Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). Crop Evapotranspiration—guidelines for computing crop water requirements. FAO Irrigation and Drainage Paper 56, 300, D05109.
2. Allouche, N., Maanan, M., Gontara, M., Rollo, N., Jmal, I., & Bouri, S. (2017). A global risk approach to assessing groundwater vulnerability. Environmental Modelling and Software, 88, 168–182.
3. Arfanuzzaman, M. A., & Rahman, A. (2017). Sustainable water demand management in the face of rapid urbanization and ground water depletion for social-ecological resilience building. Global Ecology and Conservation, 10, 9–22.
4. Asdak, C. (2010). Hidrologi dan pengelolaan DAS (Hydrology and Watershed Management). Yogyakarta: Gadjah Mada University Press.
5. Asian Development Bank. (2006). Urbanization and sustainability in Asia: Case studies of good practice. In B. Roberts, T. Kanaley (Eds.), Cities Alliance: Cities without slums, Manila.