Blake, F. R. (1977). The study of Philippine languages at Johns Hopkins University and its bearing on linguistic science [microform]. Photoduplication Service, University of the Philippines Library.
Cita Chicago (17th ed.)Blake, Frank Ringgold. The Study of Philippine Languages at Johns Hopkins University and Its Bearing on Linguistic Science [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Cita MLA (9th ed.)Blake, Frank Ringgold. The Study of Philippine Languages at Johns Hopkins University and Its Bearing on Linguistic Science [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.