Feather, R. M., Snyder, S. L., & T Hesser, D. (1993). Merrill earth science. McGraw-Hill.
Chicagoスタイル(17版)引用形式Feather, Ralph M., Susan Leach Snyder, , Dale T Hesser. Merrill Earth Science. New York: McGraw-Hill, 1993.
MLA(8版)引用形式Feather, Ralph M., et al. Merrill Earth Science. McGraw-Hill, 1993.
警告: この引用は必ずしも正確ではありません.