HAMDAN AZHAR SIREGAR, OTOM MUSTOMI, UNTORO, NUR AIDAH. THE ROLE OF COOPERATION AGREEMENT IN PARTNERSHIP SYSTEM TO IMPROVE INDONESIAN COOPERATIVE BUSINESS COMPETITIVENESSIN THE NATIONAL ECONOMY. JournalNX [Internet]. 2021Feb.6 [cited 2025Mar.10];6(06):355-61. Available from: https://repo.journalnx.com/index.php/nx/article/view/1268