Wiranta, Sukarna. “KINERJA PERDAGANGAN LINTAS BATAS NTT-TIMOR LESTEE”. Buletin Ilmiah Litbang Perdagangan, vol. 2, no. 2, Dec. 2008, pp. 187-15, https://jurnal.kemendag.go.id/index.php/bilp/article/view/167.