S. S. HOTKAR; S. G. SHIROLE; S. C. HALOLI; A. D. RATHOD; M. B. MANE. MANUAL MOVABLE FOLDABLE LADDER. International Engineering Journal For Research & Development, [S. l.], v. 10, n. 2, p. 4, 2025. Disponível em: http://www.iejrd.com/index.php/iejrd/article/view/3256. Acesso em: 30 jun. 2026.