APA (7 वां संस्करण) प्रशस्ति पत्र

Urdiales Orellana, V. F., & León Vélez, M. V. (2013). Developing english vocabulary through the use of songs in students of fourth level of Basic Education at “Unidad Educativa Fiscomisional Don Bosco.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Urdiales Orellana, Vicente Fernando, और María Verónica León Vélez. Developing English Vocabulary Through the Use of Songs in Students of Fourth Level of Basic Education at “Unidad Educativa Fiscomisional Don Bosco. 2013.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Urdiales Orellana, Vicente Fernando, और María Verónica León Vélez. Developing English Vocabulary Through the Use of Songs in Students of Fourth Level of Basic Education at “Unidad Educativa Fiscomisional Don Bosco. 2013.

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