Foster, H. L. (1965). Geology of Ishigaki-shima, Ryūkū-rettō. U.S. Dept. of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationFoster, Helen Laura. Geology of Ishigaki-shima, Ryūkū-rettō. [Washington, D.C.]: U.S. Dept. of the Interior, Geological Survey, 1965.
MLA (9th ed.) CitationFoster, Helen Laura. Geology of Ishigaki-shima, Ryūkū-rettō. U.S. Dept. of the Interior, Geological Survey, 1965.
Warning: These citations may not always be 100% accurate.