Lauchachinda, C. (1977). Congruence of circles associated with a given surface [microform]. Photoduplication Service. University of the Philippines Library.
Chicago-viite (17. p.)Lauchachinda, Chintana. Congruence of Circles Associated with a Given Surface [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA-viite (9. p.)Lauchachinda, Chintana. Congruence of Circles Associated with a Given Surface [microform]. Photoduplication Service. University of the Philippines Library, 1977.
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