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Gumilar, Rendra, & Yoni Hermawan.
" HUBUNGAN DISIPLIN BELAJAR DAN PRESTASI BELAJAR MAHASISWA DENGAN PERILAKUNYA DALAM MEMELIHARA KEBERSIHAN LINGKUNGAN KAMPUS." <em>Bumi Lestari</em> [Online], 16.1 (2016): n. pag. Web. 30 Aug. 2026