The first Author (Hakkun Elmunsyah) is a member of the National Association of Vocational Teachers and Lecturers. He often works as reviewer for international conferences (ICEEIE, ICVEE). He works also as a lecturer at Universitas Negeri Malang, East Java, Indonesia. He is the Editor-in-Chief of the journals JIP and LITE at online-journals.org.
The first Author (Hakkun Elmunsyah) is a member of the National Association of Vocational Teachers and Lecturers. He often works as reviewer for international conferences (ICEEIE, ICVEE). He works also as a lecturer at Universitas Negeri Malang, East Java, Indonesia. He is the Editor-in-Chief of the journals JIP and LITE at online-journals.org.