Παραπομπή σε μορφή APA (7η εκδ.)
Alvarenga Salazar, W. E., Meléndez, C., Salazar Paredes, A. C., & Vàsquez Marroquìn, A. M. (2011). Using "friends" to teach vocabulary to intensive intermediate english II from groups 1 and 2 at the University of El Salvador semester I - 2011. Universidad de El Salvador.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Alvarenga Salazar, Walter Ernesto, Cristian Meléndez, Ana Carmina Salazar Paredes, και Ana Marìa Vàsquez Marroquìn. Using "Friends" to Teach Vocabulary to Intensive Intermediate English II from Groups 1 and 2 at the University of El Salvador Semester I - 2011. Santa Ana, El Salvador: Universidad de El Salvador, 2011.
Παραπομπή σε μορφή MLA (9th εκδ.)
Alvarenga Salazar, Walter Ernesto, et al. Using "Friends" to Teach Vocabulary to Intensive Intermediate English II from Groups 1 and 2 at the University of El Salvador Semester I - 2011. Universidad de El Salvador, 2011.
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