Olson, T., Allred, S., & Proch, G. (2009). How to get rich on the Oregon Trail: My adventures among cows, crooks & heroes on the road to fame and fortune : writing journal of--Master William Reed : Portland, Oregon 1852. National Geographic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Olson, Tod, Scott Allred, و Gregory Proch. How to Get Rich on the Oregon Trail: My Adventures Among Cows, Crooks & Heroes on the Road to Fame and Fortune : Writing Journal Of--Master William Reed : Portland, Oregon 1852. Washington, D.C.: National Geographic, 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Olson, Tod, et al. How to Get Rich on the Oregon Trail: My Adventures Among Cows, Crooks & Heroes on the Road to Fame and Fortune : Writing Journal Of--Master William Reed : Portland, Oregon 1852. National Geographic, 2009.