Rotor, D. R. A study of the development, practices and contributions of S.V.D. institutions in the Province of Abra [microform]. Photoduplication Service.
Lua i Stíl Chicago (17ú heag.)Rotor, Demetrio R. A Study of the Development, Practices and Contributions of S.V.D. Institutions in the Province of Abra [microform]. Quezon City: Photoduplication Service.
Lua MLA (9ú heag.)Rotor, Demetrio R. A Study of the Development, Practices and Contributions of S.V.D. Institutions in the Province of Abra [microform]. Photoduplication Service.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.