Hwang, P. O. (1976). A comparative study of proficiency and progress in reading of the freshmen in Xavier High School [microform]. Photoduplication Service. University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Hwang, Philip O. A Comparative Study of Proficiency and Progress in Reading of the Freshmen in Xavier High School [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.
Lua MLA (9ú heag.)Hwang, Philip O. A Comparative Study of Proficiency and Progress in Reading of the Freshmen in Xavier High School [microform]. Photoduplication Service. University of the Philippines Library, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.