Orosa, E. P. (1980). Ang patakarang edukasyong bilinggwal at ang implementasyon nito [microform].
Παραπομπή σε μορφή Chicago (17η εκδ.)Orosa, Eden Punzalan. Ang Patakarang Edukasyong Bilinggwal at Ang Implementasyon Nito [microform]. Quezon City :Photoduplication Service. University of the Philippines Library, 1980.
Παραπομπή σε μορφή MLA (9th εκδ.)Orosa, Eden Punzalan. Ang Patakarang Edukasyong Bilinggwal at Ang Implementasyon Nito [microform]. 1980.
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