APA (7th ed.) Citation

Cowley, R., & Ambrose, S. E. (1999). What if?: The world's foremost military historians imagine what might have been : essays. G.P. Putnam's Sons.

Chicago Style (17th ed.) Citation

Cowley, Robert, and Stephen E. Ambrose. What If?: The World's Foremost Military Historians Imagine What Might Have Been : Essays. New York: G.P. Putnam's Sons, 1999.

MLA (9th ed.) Citation

Cowley, Robert, and Stephen E. Ambrose. What If?: The World's Foremost Military Historians Imagine What Might Have Been : Essays. G.P. Putnam's Sons, 1999.