Estu Widodo Universitas Muhammadiyah Malang Indonesia
Estu Widodo was born in Banyuwangi, East Java, Indonesia, on 20 May 1968. He currently works as a lecturer an English Department of Universitas Muhammadiyah Malang. He attained his bachelor degree in 1991 from English Education Department of Universitas Jember, East Java. His master degree was attained in 1999 from Universitas Gadjah Mada, majoring American Studies. His doctoral degree was attained in 2016 from the study program of Educational Research and Evaluation, Universitas Negeri Yogyakarta.
Franciscus Xaverius Sudarsono Universitas Negeri Yogyakarta Indonesia
He works as a lecturer at the department of Educational Research and Evaluation, Graduate School of Universitas Negeri Yogyakarta.