Drezner has a nice list of books/ articles on reputation and credibility. In chronological order, the following is his list:

1. Niccolò Machiavelli, The Prince (1532 [1513]).
2. Thomas Schelling, The Strategy of Conflict (1960).
3. Earnest May and Philip Zelikow, ed., The Kennedy Tapes (1962 [2002]).
4. Jonathan Mercer, Reputation and International Politics (1996).
5. George Downs and Michael Jones, "Reputation, Compliance, and International Law." Journal of Legal Studies 31 (January 2002): S95-S114.
6. Anne Sartori, Deterrence by Diplomacy (2005).
7. Daryl Press, Calculating Credibility (2005).
8. Mark Crescenzi, "Reputation and International Conflict," American Journal of Political Science 51 (April 2007): 382-396.
9. Michael Tomz, Reputation and International Cooperation.