Colt, C. C., & Keith, N. S. (1933). 28 days: A history of the banking crisis / by Charles C. Colt and N. S. Keith (2. print.). Greenberg.

Colt, Charles Cary, and N. S. Keith. 28 Days: A History of the Banking Crisis / by Charles C. Colt and N. S. Keith. 2. print. New York: Greenberg, 1933.

Colt, Charles Cary, and N. S. Keith. 28 Days: A History of the Banking Crisis / by Charles C. Colt and N. S. Keith. 2. print. Greenberg, 1933.