Koforidua Technical University, Ghana

The University of Aizu, Japan.

University of Tirana, Albania

Department of Foreign Languages, Faculty of Education and Philology, Fan S Noli University, Albania

University of Jaffna, Sri Lanka, Sri Lanka

University of Malaya, Malaysia

Batumi Shota Rustaveli State University, Georgia

University of Education, Winneba, Ghana

Sultan Qaboos University, Oman

Universitas Islam Indonesia, Indonesia