N. S. Haile and J. D. Bignell (1971) “Late Cretaceous age based on K/Ar dates of granitic rock from the Tambelan and Bunguran islands, Sunda Shelf, Indonesia”, Netherlands Journal of Geosciences, pp. 687-690. Available at: https://njgjournal.nl/index.php/njg/article/view/14868 (Accessed: 31August2026).