Kumaseh, Eunike Irene, and Yohanis A. R. Langi. “REDUCED MODULES ARE ABELIAN”. d’Cartesian 1, no. 1 (September 30, 2012): 12–17. Accessed May 5, 2024. https://ejournal.unsrat.ac.id/v3/index.php/decartesian/article/view/530.