Olson, T., Allred, S., & Proch, G. (2010). How to get rich on a Texas cattle drive: In which I tell the honest truth about rampaging rustlers, stampeding steers, and other fateful hazards on the wild Chisholm Trail. National Geographic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Olson, Tod, Scott Allred, و Gregory Proch. How to Get Rich on a Texas Cattle Drive: In Which I Tell the Honest Truth About Rampaging Rustlers, Stampeding Steers, and Other Fateful Hazards on the Wild Chisholm Trail. Washington, D.C.: National Geographic, 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Olson, Tod, et al. How to Get Rich on a Texas Cattle Drive: In Which I Tell the Honest Truth About Rampaging Rustlers, Stampeding Steers, and Other Fateful Hazards on the Wild Chisholm Trail. National Geographic, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.