PURNOMO, C. Efektifitas Strategi Pemasaran Produk Wisata Minat Khusus Gua Cerme, Imogiri, Bantul. Jurnal Siasat Bisnis, [S. l.], v. 12, n. 3, 2008. Disponível em: https://jurnal.uii.ac.id/JSB/article/view/3937. Acesso em: 3 may. 2024.