Uldrich, J., Lewis, M., & Clark, W. (2004). Into the unknown: Leadership lessons from Lewis & Clark's daring westward expedition. American Management Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Uldrich, Jack, Meriwether Lewis, و William Clark. Into the Unknown: Leadership Lessons from Lewis & Clark's Daring Westward Expedition. New York: American Management Association, 2004.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Uldrich, Jack, et al. Into the Unknown: Leadership Lessons from Lewis & Clark's Daring Westward Expedition. American Management Association, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.