Philippine Islands. Bureau of Coast and Geodetic Survey. (1924). Relief model of the Philippine Islands: Notes on the construction and some of its salient features. Bureau of Printing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippine Islands. Bureau of Coast and Geodetic Survey. Relief Model of the Philippine Islands: Notes on the Construction and Some of Its Salient Features. Manila: Bureau of Printing, 1924.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippine Islands. Bureau of Coast and Geodetic Survey. Relief Model of the Philippine Islands: Notes on the Construction and Some of Its Salient Features. Bureau of Printing, 1924.
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