Djahidin, Danny. “INTEGRATION ANALYSIS OF SaaS BASED ACCOUNTING APPLICATION. CASE STUDY ON XYZ.COM”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi 9, no. 1 (July 2, 2020): 14-20. Accessed September 21, 2020. http://ejournals.umn.ac.id/index.php/SI/article/view/1286.