Jorge, J. d. B. (1975). The accounting system in the Government Service Insurance System [microform]. Photoduplication Service, University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Jorge, Joaquina del Barrio. The Accounting System in the Government Service Insurance System [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1975.
Lua MLA (9ú heag.)Jorge, Joaquina del Barrio. The Accounting System in the Government Service Insurance System [microform]. Photoduplication Service, University of the Philippines Library, 1975.
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