Wibowo, Joshi Maharani. “Ijen Tourism Cluster (ITC): Analisis Klaster Pengembangan Ekowisata Taman Wisata Alam Kawah Ijen”. Inovasi, vol. 18, no. 2, Oct. 2021, pp. 179-88, doi:10.33626/inovasi.v18i2.339.