Haven, W. I. (1976). Around the world for the centennial [microform]. Photoduplication Service, University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHaven, William Ingraham. Around the World for the Centennial [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHaven, William Ingraham. Around the World for the Centennial [microform]. Photoduplication Service, University of the Philippines Library, 1976.
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