APA (7e ed.) Bronvermelding
Tysdal, R. G., & Berg, R. B. (1987). Mineral Resources of the Ruby Mountains Wilderness Study Area, Madison County, Montana. United States Government Print. Office.
Chicago (17e ed.) Bronvermelding
Tysdal, Russell G., en R. B. Berg. Mineral Resources of the Ruby Mountains Wilderness Study Area, Madison County, Montana. Washington: United States Government Print. Office, 1987.
MLA (9e ed.) Bronvermelding
Tysdal, Russell G., en R. B. Berg. Mineral Resources of the Ruby Mountains Wilderness Study Area, Madison County, Montana. United States Government Print. Office, 1987.
Let op: Deze citaties zijn niet altijd 100% accuraat.