Fox, R. B., & Peralta, J. T. (1974). Preliminary report on the palaeolithic archaeology of Cagayan Valley, Philippines and the Cabalwanian industry. National Museum of the Philippines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFox, Robert B., और Jesus T. Peralta. Preliminary Report on the Palaeolithic Archaeology of Cagayan Valley, Philippines and the Cabalwanian Industry. Manila: National Museum of the Philippines, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFox, Robert B., और Jesus T. Peralta. Preliminary Report on the Palaeolithic Archaeology of Cagayan Valley, Philippines and the Cabalwanian Industry. National Museum of the Philippines, 1974.
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