JAMAALUDDIN. Buku Ajar KEWIRAUSAHAAN. Umsida Press, [S. l.], p. 1–162, 2021. DOI: 10.21070/2017/978-602-5914-55-3. Disponível em: https://press.umsida.ac.id/index.php/umsidapress/article/view/978-602-5914-55-3. Acesso em: 11 jul. 2025.