SUTJIATMO, B. P. . Analisis Ekspor Komoditi Kopi Indonesia ke Singapura. Jurnal Pendidikan Tambusai, [S. l.], v. 5, n. 1, p. 2641–2649, 2021. DOI: 10.31004/jptam.v5i1.5982. Disponível em: https://jptam.org/index.php/jptam/article/view/5982. Acesso em: 3 jul. 2024.