Guntarayana, I. “Analysis Determinant Sustainable Competitive Advantage Quality Product: (Study on Welding Workshop Business in Blitar Regency)”. Translitera : Jurnal Kajian Komunikasi Dan Studi Media, Vol. 12, no. 1, Mar. 2023, pp. 85-96, doi:10.35457/translitera.v12i1.2716.