Clark, Green, Santiago et Vosmer, « The Butuan Two boat known as a balangay in the National Museum, Manila, Philippines », The International Journal of Nautical Archaeology, vol. 22, , p. 143–159 (DOI10.1111/j.1095-9270.1993.tb00403.x, lire en ligne, consulté le )
Clark, Green, Santiago et Vosmer, « The Butuan Two boat known as a balangay in the National Museum, Manila, Philippines », The International Journal of Nautical Archaeology, vol. 22, , p. 143–159 (DOI10.1111/j.1095-9270.1993.tb00403.x, lire en ligne, consulté le )