ISMET SIHOMBING; ERNIYANTI ERNIYANTI; RAMLAN RAMLAN; SOERYA RESPATIONO. Juridical Analysis of the Issuance of Sailing Approval Letters at the Municipal Office and Port Authority to Obtain Legal Certainty : Research Study on the Batam Special Port Authority and The Municipal Office. International Journal of Social Welfare and Family Law, [S. l.], v. 1, n. 4, p. 24–38, 2024. DOI: 10.62951/ijsw.v1i4.59. Disponível em: https://international.appisi.or.id/index.php/IJSW/article/view/59. Acesso em: 27 mar. 2026.