Nita, N. E., Imsar, and J. Nasution. “The Influence of Education, Community Income Level and Investment Motives on the Demand for Sharia Insurance in Sambirejo Timur Village, Percut Sei Tuan District, Deli Serdang Regency”. ProBisnis : Jurnal Manajemen, vol. 15, no. 4, Sept. 2024, pp. 681-9, http://ejournal.joninstitute.org/index.php/ProBisnis/article/view/669.