[MSDN Library June 1998] Abstraction (100%)

MSDN Library Visual Studio 6.0 > Partial Books > Professional Visual Basic 5.0 Business Objects > Chapter 1: Introducing Business Objects > Object-based vs. Object-oriented Approaches

[MSDN Library September 1992] Abstraction (48.052041848084%)

Product Documentation > C/C++ 7.0 > C++ Tutorial > PART 3 Object-Oriented Design > Chapter 9 Fundamentals of Object-Oriented Design > Features of Object-Oriented Programming

[MSDN Library June 1998] Abstraction (33.9231547017189%)

MSDN Library Visual Studio 6.0 > Conference Papers > Tech*Ed 95 Conference Papers > Microsoft Visual FoxPro > Fundamentals of Object-Oriented Programming > Glossary