IHaut-Ogooué yisifundazwe sase Gabhoni. "Sub-national HDI - Area Database - Global Data Lab". hdi.globaldatalab.org. Kulandwe ngo-Mfumfu 10, 2020. Le-athikhili iyisigcino (isiNgisi: "a stub"). Ungakwazi ukusiza uWikipedia: ngokuyikhulisa.