APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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

Let op: Deze citaties zijn niet altijd 100% accuraat.