Hasibuan, Elwardi. 2022. “ANALYSIS OF RECEIVABLES MANAGEMENT EFFECTIVENESS AND THEIR EFFECT ON COMPANY LIQUIDITY AT PT JACO NUSANTARA MANDIRI MEDAN”. Jurnal Ekonomi 11 (01):390-94. https://www.ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/263.