Philippine Islands, Legislature. Senate. (1977). Directorio oficial del Senado de Filipinas [microform]. Photoduplication Service. University of the Philippines Library.
芝加哥风格引文Philippine Islands, Legislature. Senate. Directorio Oficial Del Senado De Filipinas [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
MLA引文Philippine Islands, Legislature. Senate. Directorio Oficial Del Senado De Filipinas [microform]. Photoduplication Service. University of the Philippines Library, 1977.
警告：这些引文格式不一定是100％准确.