Currency Options
Options on Foreign Exchange - David DeRosa - visit his site, click here
The Handbook of Exotic Options: Instruments, Analysis, and Applications - Israel Nelken
Volatility and Correlation: In the Pricing of Equity, Fx . . - Riccardo Rebonato
Buying and Selling Volatility - Kevin B. Connolly
Pricing, Hedging, and Trading Exotic Options - Izzy Nelken

Risk Management and Hedging
Currency Risk Management - Gary Shoup
Fx: Managing Global Currency Risk - Gary Klopfenstein - visit his site, click here
Global Investment Risk Management - Ezra Zask
Managing Foreign Exchange Risk: Advanced Strategies - David DeRosa - visit his site, click here
Managing Risk in the Foreign Exchange, Money, and Derivative Markets - Heinz Riehal

Money Management
The Mathematics of Money Management: Risk Analysis Techniques for Traders - Ralph Vince
Portfolio Management Formulas: . . - Ralph Vince
Quantitative Trading &Money Management: A Guide to Risk Analysis . . - Fred Gehm

Foreign Trade
Real Exchange Rates, Devaluation and Adjustment: Exchange Rate Policy in Developing . . - S. Edwards
The Law of Foreign Exchange - Raj K. Bhala