1. Tom M. Apostol, Mathematical Analysis, 2nd ed., Addison-Wesley, Reading, MA, 1974.
2. Robert G. Bartle and Donald R. Sherbert, Introduction to Real Analysis, Wiley, New York, 1982.
3. Walter Rudin, Principles of Mathematical Analysis, McGraw-Hill, New York, 1964.
4. Walter Rudin. Real and Complex Analysis, McGraw-Hill, New York, 1966.