APA-referens (7:e uppl.)
Peterson, E. (2008). Ramble Colorado: The wanderer's guide to the offbeat, overlooked, and outrageous. Speck Press.
Chicago-referens (17:e uppl.)
Peterson, Eric. Ramble Colorado: The Wanderer's Guide to the Offbeat, Overlooked, and Outrageous. Golden, Colo.: Speck Press, 2008.
MLA-referens (9:e uppl.)
Peterson, Eric. Ramble Colorado: The Wanderer's Guide to the Offbeat, Overlooked, and Outrageous. Speck Press, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.