WIRATMA, H. D.; NURGIYANTI, T. Pembangunan Pariwisata Kulon Progo Melalui Konsep Green Economy dan Blue Economy. Nation State: Journal of International Studies, [S. l.], v. 2, n. 2, p. 161-172, 2019. DOI: 10.24076/NSJIS.2019v2i2.164. Disponível em: https://jurnal.amikom.ac.id/index.php/nsjis/article/view/164. Acesso em: 4 jan. 2025.