APA-viite (7. p.)
Lindsey, D. A. (1985). Mineral Resources of the Black Canyon and South Piney Creek wilderness study areas, Saguache County, Colorado. U.S. Geological Survey.
Chicago-viite (17. p.)
Lindsey, David A. Mineral Resources of the Black Canyon and South Piney Creek Wilderness Study Areas, Saguache County, Colorado. Washington: U.S. Geological Survey, 1985.
MLA-viite (9. p.)
Lindsey, David A. Mineral Resources of the Black Canyon and South Piney Creek Wilderness Study Areas, Saguache County, Colorado. U.S. Geological Survey, 1985.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.