ET. AL., Wien Dyahrini,. “The Effect Of Leadership And Business Strategy On The Performance Of Pt.Spm Jakarta Indonesia". Turkish Journal of Computer and Mathematics Education (TURCOMAT), [S. l.], v. 12, n. 8, p. 998–1005, 2021. Disponível em: https://turcomat.org/index.php/turkbilmat/article/view/2978. Acesso em: 26 oct. 2025.