Kumar, Pankaj; Mishra, Binaya Kumar; Avtar, Ram; Chakraborty, Shamik (2021). "Quantifying future water environment using numerical simulations: a scenario-based approach for sustainable groundwater management plan in Medan, Indonesia". Global Groundwater. Elsevier. pp. 585–596. doi:10.1016/b978-0-12-818172-0.00043-8. ISBN9780128181720. S2CID230551984. Medan is the capital city of North Sumatra province.
Juraidi (23 August 2008). "Menelusuri Jejak Kerajaan Aru". Kompas.com (in Indonesian). Archived from the original on 17 September 2017. Retrieved 12 May 2017.
Kumar, Pankaj; Mishra, Binaya Kumar; Avtar, Ram; Chakraborty, Shamik (2021). "Quantifying future water environment using numerical simulations: a scenario-based approach for sustainable groundwater management plan in Medan, Indonesia". Global Groundwater. Elsevier. pp. 585–596. doi:10.1016/b978-0-12-818172-0.00043-8. ISBN9780128181720. S2CID230551984. Medan is the capital city of North Sumatra province.
Juraidi (23 August 2008). "Menelusuri Jejak Kerajaan Aru". Kompas.com (in Indonesian). Archived from the original on 17 September 2017. Retrieved 12 May 2017.