Selirio, . B. (1977). Ports and harbors in the philippines today. Department of Public Works, Transportation and Communications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSelirio, Benedicto. Ports and Harbors in the Philippines Today. [Manila]: Department of Public Works, Transportation and Communications, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSelirio, Benedicto. Ports and Harbors in the Philippines Today. Department of Public Works, Transportation and Communications, 1977.
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