NICHOLSON, JD, W. C. Mutual aid agreements. Journal of Emergency Management, Weston, MA, USA, v. 3, n. 5, p. 15–16, 2005. DOI: 10.5055/jem.2005.0046. Disponível em: https://wmpllc.org/ojs/index.php/jem/article/view/1721. Acesso em: 2 may. 2024.