BUKU AJAR FENOMENA DASAR MESIN. Universitas Nusantara PGRI Kediri, [S. l.], p. 1–41, 2023. DOI: 10.29407/punp.vi.19. Disponível em: https://penerbit.unpkediri.ac.id/index.php/unp/article/view/19. Acesso em: 14 oct. 2025.