APA-ийн эшлэл(7 дахь хэвлэлт)

Carpio Celi, R. A. (2016). The incidence of using problem-based learning (PBL) strategy on the level of listening skill development for students attending the third year of bachillerato at Unidad Educativa Jorge Rodríguez Román located in canton of Orellana during the first quimester of 2015-2016 school year.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Carpio Celi, Rosenda Alba. The Incidence of Using Problem-based Learning (PBL) Strategy on the Level of Listening Skill Development for Students Attending the Third Year of Bachillerato at Unidad Educativa Jorge Rodríguez Román Located in Canton of Orellana During the First Quimester of 2015-2016 School Year. 2016.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Carpio Celi, Rosenda Alba. The Incidence of Using Problem-based Learning (PBL) Strategy on the Level of Listening Skill Development for Students Attending the Third Year of Bachillerato at Unidad Educativa Jorge Rodríguez Román Located in Canton of Orellana During the First Quimester of 2015-2016 School Year. 2016.

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