Abad, D. B. (1974). Pag-aaral ng mga salitang nagpapahayag ng tunog at ingay [microform]. Photoduplication Service, University of the Philippines Library.
Παραπομπή σε μορφή Chicago (17η εκδ.)Abad, Domiciana B. Pag-aaral Ng Mga Salitang Nagpapahayag Ng Tunog at Ingay [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1974.
Παραπομπή σε μορφή MLA (9th εκδ.)Abad, Domiciana B. Pag-aaral Ng Mga Salitang Nagpapahayag Ng Tunog at Ingay [microform]. Photoduplication Service, University of the Philippines Library, 1974.
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