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.
Lua i Stíl Chicago (17ú heag.)Fox, Robert B., agus Jesus T. Peralta. Preliminary Report on the Palaeolithic Archaeology of Cagayan Valley, Philippines and the Cabalwanian Industry. Manila: National Museum of the Philippines, 1974.
Lua MLA (9ú heag.)Fox, Robert B., agus Jesus T. Peralta. Preliminary Report on the Palaeolithic Archaeology of Cagayan Valley, Philippines and the Cabalwanian Industry. National Museum of the Philippines, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.