Camara de comercio de las Islas Filipinas. (1975). Yearbook of the Philippine Islands [microform]. Pub. by the Camara de comercio de las Islas Filipinas [Chamber of Commerce of the Philippine Islands] 1920. Photoduplication Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCamara de comercio de las Islas Filipinas. Yearbook of the Philippine Islands [microform]. Pub. by the Camara De Comercio De Las Islas Filipinas [Chamber of Commerce of the Philippine Islands] 1920. Quezon City: Photoduplication Service, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCamara de comercio de las Islas Filipinas. Yearbook of the Philippine Islands [microform]. Pub. by the Camara De Comercio De Las Islas Filipinas [Chamber of Commerce of the Philippine Islands] 1920. Photoduplication Service, 1975.
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