Bolaños Cornejo, C. A., Calderon Hernandez, E. d. C., Segura Murga, V. O., Mata Chávez,Miguel Ángel, & Ayala, E. N. The importance of using variety of speaking activities to trigger advance English i students' participation at the Department of Foreign Languages, University of El Salvador, year 2014.

Bolaños Cornejo, Celina Arely, Elizabeth del Carmen Calderon Hernandez, Victor Oswaldo Segura Murga, Mata Chávez,Miguel Ángel, and Edgar Nicolas Ayala. The Importance of Using Variety of Speaking Activities to Trigger Advance English I Students' Participation At the Department of Foreign Languages, University of El Salvador, Year 2014.

Bolaños Cornejo, Celina Arely, et al. The Importance of Using Variety of Speaking Activities to Trigger Advance English I Students' Participation At the Department of Foreign Languages, University of El Salvador, Year 2014.