Uldrich, J., Lewis, M., & Clark, W. (2004). Into the unknown: Leadership lessons from Lewis & Clark's daring westward expedition. American Management Association.

Uldrich, Jack, Meriwether Lewis, and William Clark. Into the Unknown: Leadership Lessons from Lewis & Clark's Daring Westward Expedition. New York: American Management Association, 2004.

Uldrich, Jack, et al. Into the Unknown: Leadership Lessons from Lewis & Clark's Daring Westward Expedition. American Management Association, 2004.