zakiy, I., and E. F. Cahyono. “FACTORS THAT INFLUENCE GROSS DOMESTIC PRODUCT IN OIL EXPORTING COUNTRIES MEMBERS OF THE ORGANIZATION OF ISLAMIC COOPERATION (OIC) IN THE PERIOD 1985-2016”. Airlangga International Journal of Islamic Economics and Finance, vol. 2, no. 1, Oct. 2019, pp. 20-36, doi:10.20473/aijief.v2i1.15471.