Rotor, D. R. (1954). A study of the development, practices, and contributions of S.V.D. institutions in the Province of Abra.
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. 1954.
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. 1954.
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