Kretchik, Walter E.. U.S. Army Doctrine: From the American Revolution to the War on Terror. Lawrence, KS: University Press of Kansas, 2011.

Kretchik, Walter E.. "Concerning Multinational Staff Efficiency and Future NATO Operations." Connections: The Quarterly Journal  3, no. 4 (2004): 53-58.

Kretchik, Walter E.. Interview with Lieutenant Colonel George Steuber. Fort Leavenworth, Kansas, 1998.

Kretchik, Walter E.. Interview with Lieutenant General Joseph W. Kinzer. Fort Sam Houston, Texas, 1998.

Kretchik, Walter E.. Interview with Lieutenant Colonel Daniel Ward. Fort Leavenworth, Kansas, 1995.

Kretchik, Walter E.. Interview with Lieutenant Colonel Thomas Adams. Fort Leavenworth, Kansas, 1995.