Bary, Pakasa. “PROSPEK PERDAGANGAN INDONESIA, CINA DAN INDIA MELALUI ANALISA GRAVITY MODEL”. Buletin Ilmiah Litbang Perdagangan 4, no. 2 (November 30, 2010): 194–209. Accessed April 3, 2025. https://jurnal.kemendag.go.id/index.php/bilp/article/view/152.