Citazione Stile APA (7a Edizione)
(1987). Mineral Resources of wilderness study areas: Southwestern Colorado. Chap. A. United States Government Print. Office.
Citazione stile Chigago Style (17a edizione)
Mineral Resources of Wilderness Study Areas: Southwestern Colorado. Chap. A. Washington: United States Government Print. Office, 1987.
Citatione MLA (9a ed.)
Mineral Resources of Wilderness Study Areas: Southwestern Colorado. Chap. A. United States Government Print. Office, 1987.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.