Marketing Communications of the Yogyakarta City Tourism Office in Introducing Kotabaru as a Cultural Heritage Area and Green CityKrisna Mulawarman, Yeni Rosilawati, Zain Rafique and Muhammad Iqbal KhatamiE3S Web Conf., 595 (2024) 01022DOI: https://doi.org/10.1051/e3sconf/202459501022