AkbarM. L., SurosoA. I., JuandaB., and SukmawatiA. “Optimal Maturity Level Development for Government Goods/Services Procurement Organizations (UKBPJ) in Indonesia”. Jurnal Aplikasi Bisnis Dan Manajemen (JABM), Vol. 8, no. 2, June 2022, p. 424, doi:10.17358/jabm.8.2.424.