WASPADA, Ikaputera. Sukses wirausaha sukes profit. Jurnal Abmas, [S. l.], v. 4, n. 1, p. 21–32, 2004. DOI: 10.17509/abmas.v4i1.67. Disponível em: https://ejournal-dppm.upi.edu/abmas/article/view/67. Acesso em: 1 aug. 2026.