Turki Zuaiter, Zuhair Hamed, and Abdullah Khader Abtan Sabawi. “Measuring and Analyzing the Impact of Some Macroeconomic Variables on ه Ncoming Foreign Direct Investment in Singapore for the Period (1990-2020)”. Tikrit Journal of Administrative and Economic Sciences, vol. 19, no. 64, 2, Dec. 2023, pp. 342-65, doi:10.25130/tjaes.19.64.2.19.