Mathisen, M. E. (1981). Plio-Pleistocene geology of the central Cagayan Valley, northern Luzon, Philippines.
Chicagoスタイル(17版)引用形式Mathisen, Mark Evan. Plio-Pleistocene Geology of the Central Cagayan Valley, Northern Luzon, Philippines. 1981.
MLA(9版)引用形式Mathisen, Mark Evan. Plio-Pleistocene Geology of the Central Cagayan Valley, Northern Luzon, Philippines. 1981.
警告: この引用は必ずしも正確ではありません.