Austria, B. S. (1998). Geology and resource development in the Philippines. Department of Science and Technology, U.P. Institute for Science and Mathematics Education Development and Philippine Association for the Advancement of Science.
Chicago-viite (17. p.)Austria, Benjamin S. Geology and Resource Development in the Philippines. Quezon City: Department of Science and Technology, U.P. Institute for Science and Mathematics Education Development and Philippine Association for the Advancement of Science, 1998.
MLA-viite (9. p.)Austria, Benjamin S. Geology and Resource Development in the Philippines. Department of Science and Technology, U.P. Institute for Science and Mathematics Education Development and Philippine Association for the Advancement of Science, 1998.