Osbal Saragih, Suhadak, Kadarisman, Solimun. “CROSS TABULATION TO KNOW THE RELATIONSHIP BETWEEN PERFORMANCE AND SUSTAINABILITY IN BRILINK AGENTS IN WEST JAVA”. International Journal of Advanced Science and Technology, Vol. 29, no. 05, Apr. 2020, pp. 32 -39, http://sersc.org/journals/index.php/IJAST/article/view/8637.