Books like Introduction to Real Analysis
Robert G. Bartle
Introduction to Real Analysis is 394 pages, about 7 hours 13 minutes at 250 words a minute.
7 books to read next
How long each takes
Introductory Mathematical Analysis 15.6 h 
Calculus 12.3 h 
Principles of Mathematical Analysis 5.0 h 
Understanding Analysis 5.4 h 
Mathematical Analysis 12.7 h 
Complex Analysis 8.4 h 
Advanced Calculus 10.6 h Bar height shows length. Estimated at 250 words a minute.