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Sekola, 2009
Buku Teks
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Seok, Dong-yeon
Junghaksaengi dwegi jone kkok ilgoyahal manhwa yongo gyogwaseo 2
Wisdom House, 2009
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Kajian Hubungan antara Learning Approach dan Prestasi Belajar Matematika pada Siswa XII IPA SMA "X" Bandung
Artikel Jurnal
Journal of mathematical analysis and applications
Academic press. inc, 2018
Majalah, Jurnal, Buletin