Gonzaga, F. L. (1964). Directory of Philippine printers and publishers. Bureau of Public Libraries, Research and Bibliography Division.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGonzaga, Felipe L. Directory of Philippine Printers and Publishers. [Manila]: Bureau of Public Libraries, Research and Bibliography Division, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGonzaga, Felipe L. Directory of Philippine Printers and Publishers. Bureau of Public Libraries, Research and Bibliography Division, 1964.
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