Billedo, E. B. ; Ancheta, G. C. ; Beroya-Eitner, Mary Antonette ; Luis, R. C. ; Macawili, J. P. ; Marquez, E. J. ; Monsanto, E. B. ; Queano, K. L. ; Querubin, C. L. (1995):
The Geology and Structures of San Ildefonso Peninsula, Casiguran, Aurora Province : Their Relation to the Northern Sierra Madre Orogeny.
In: Journal of the Geological Society of the Philippines, 50 (1), Geological Society of the Philippines, [Article]