Lefond, S. J. (1983). Industrial minerals and rocks (nonmetallics other than fuels) (5th ed.). Society of Mining Engineers.
Chicagoスタイル(17版)引用形式Lefond, Stanley J. Industrial Minerals and Rocks (nonmetallics Other than Fuels). 5th ed. New York: Society of Mining Engineers, 1983.
MLA(9版)引用形式Lefond, Stanley J. Industrial Minerals and Rocks (nonmetallics Other than Fuels). 5th ed. Society of Mining Engineers, 1983.
警告: この引用は必ずしも正確ではありません.