Hans Wensink, Suharno Hartosukohardjo, and Koos Kool. “Paleomagnetism of the Nakfunu Formation of Early Cretaceous Age, Western Tim Or, Indonesia”. Netherlands Journal of Geosciences (January 1, 1987): 89-99. Accessed April 7, 2026. https://njgjournal.nl/index.php/njg/article/view/13095.