Haryotejo, Bagas, and Sefiani Rayadiani. “KAJIAN INDIKATOR IKLIM USAHA PERDAGANGAN DKI JAKARTA”. Buletin Ilmiah Litbang Perdagangan, vol. 3, no. 2, Dec. 2009, pp. 175-01, https://jurnal.kemendag.go.id/index.php/bilp/article/view/178.