Java Concepts by Roberto Zicari · Published January 1, 2004 · Updated February 24, 2014 C. S. Horstmann, Java Concepts, John Wiley & Sons, 2004 (4th edition), ISBN 0471697044
Object-Oriented Programming: A Unified Foundation November 3, 2013 by Roberto Zicari · Published November 3, 2013 · Last modified February 26, 2015
Pro LINQ Object Relational Mapping in C# August 1, 2008 by Roberto Zicari · Published August 1, 2008 · Last modified January 3, 2015
Touch of Class. November 3, 2013 by Roberto Zicari · Published November 3, 2013 · Last modified February 24, 2014