Peterson, E. (2008). Ramble Colorado: The wanderer's guide to the offbeat, overlooked, and outrageous. Speck Press.
Lua i Stíl Chicago (17ú heag.)Peterson, Eric. Ramble Colorado: The Wanderer's Guide to the Offbeat, Overlooked, and Outrageous. Golden, Colo.: Speck Press, 2008.
Lua MLA (9ú heag.)Peterson, Eric. Ramble Colorado: The Wanderer's Guide to the Offbeat, Overlooked, and Outrageous. Speck Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.