PURWANTI, Yanik; WISAKSONO, Arief. Pengantar Manajemen Kala I. Umsida Press, [S. l.], p. 1–60, 2024. Disponível em: https://press.umsida.ac.id/index.php/umsidapress/article/view/1479. Acesso em: 3 jul. 2025.