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.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিFox, Robert B., এবং Jesus T. Peralta. Preliminary Report on the Palaeolithic Archaeology of Cagayan Valley, Philippines and the Cabalwanian Industry. Manila: National Museum of the Philippines, 1974.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিFox, Robert B., এবং 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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