1. English Literature Department, Universitas Ahmad Dahlan, Yogyakarta, Indonesia
2. Linguistics Department, Universitas Gadjah Mada, Yogyakarta,Indonesia
3. Public Administration Department, Universitas Proklamasi 45, Yogyakarta, Indonesia
4. Informatics Department, Politeknik Negeri Batam, Kepulauan Riau, Indonesia
5. Applied Linguistics, Faculty of Languages and Arts, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia