http://repository.uhamka.ac.id/id/eprint/12525/
AN ANALYSIS OF EFL STUDENTS’ PERCEPTION OF POWERPOINT USED AS ENGLISH LEARNING MEDIA IN CLASSROOM.
Ratu, Rekian Paramasti
http://repository.uhamka.ac.id/id/eprint/12525/1/Artikel%20Jurnal%20ELLTER%20-%20Cahya%20K.pdf