American Geological Institute. (1972). Investigating the earth. Houghton Mifflin.
Chicagoスタイル(17版)引用形式American Geological Institute. Investigating the Earth. New York: Houghton Mifflin, 1972.
MLA(9版)引用形式American Geological Institute. Investigating the Earth. Houghton Mifflin, 1972.
警告: この引用は必ずしも正確ではありません.