LeRoy, L. W. (1950). Subsurface geologic methods (2nd ed.). Colorado School of Mines.
芝加哥风格引文LeRoy, L. W. Subsurface Geologic Methods. 2nd ed. Golden, Colorado: Colorado School of Mines, 1950.
MLA引文LeRoy, L. W. Subsurface Geologic Methods. 2nd ed. Colorado School of Mines, 1950.
警告：这些引文格式不一定是100％准确.