Cita APA (7th ed.)

LeRoy, L. W. (1950). Subsurface geologic methods (2nd ed.). Colorado School of Mines.

Cita Chicago (17th ed.)

LeRoy, L. W. Subsurface Geologic Methods. 2nd ed. Golden, Colorado: Colorado School of Mines, 1950.

Cita MLA (8th ed.)

LeRoy, L. W. Subsurface Geologic Methods. 2nd ed. Colorado School of Mines, 1950.