Garcia, B. C. (1977). Mapait na lihim: O Ang anak kong hindi akin [microform]. Photoduplication Service, University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Garcia, Blas Celestino. Mapait Na Lihim: O Ang Anak Kong Hindi Akin [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Citatione MLA (9a ed.)Garcia, Blas Celestino. Mapait Na Lihim: O Ang Anak Kong Hindi Akin [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.