POERWOWIDAGDO, Sapto J. Blue Ocean Strategy in Managing Maritime Security. Jurnal Pertahanan: Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nasionalism dan Integrity, [S. l.], v. 1, n. 1, p. 13–26, 2015. DOI: 10.33172/jp.v1i1.52. Disponível em: https://upgradeojs.rifqisyams.id/index.php/DefenseJournal/article/view/52. Acesso em: 23 jul. 2026.