Athearn, F. J. (1989). A forgotten kingdom: The Spanish frontier in Colorado and New Mexico, 1540-1821. Bureau of Land Management, Colorado State Office.
Chicago Style (17th ed.) CitationAthearn, Frederic J. A Forgotten Kingdom: The Spanish Frontier in Colorado and New Mexico, 1540-1821. Denver, Colo.: Bureau of Land Management, Colorado State Office, 1989.
MLA (9th ed.) CitationAthearn, Frederic J. A Forgotten Kingdom: The Spanish Frontier in Colorado and New Mexico, 1540-1821. Bureau of Land Management, Colorado State Office, 1989.
Warning: These citations may not always be 100% accurate.