[MSDN Library June 1998] IUnknown Implementation (19.1131422924901%)

MSDN Library Visual Studio 6.0 > Visual C++ Documentation > Reference > Microsoft Foundation Class Library and Templates > Active Template Library > ATL Class Overview

[MSDN Library June 1998] IUnknown Functions (18.3996212121212%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Appendixes > Functionality Groups > Function Groups

[MSDN Library June 1998] IUnknown::QueryInterface (18.2717803030303%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > Multimedia Reference > Multimedia Interfaces

[MSDN Library June 1998] IUnknown::Release (17.438446969697%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > Multimedia Reference > Multimedia Interfaces

[MSDN Library June 1998] IUnknown (16.9928148256953%)

MSDN Library Visual Studio 6.0 > Platform SDK > Networking and Distributed Services > Telephony Application Programming Interface (TAPI) > TAPI Version 3.0 > Call and Media Controls > Call and Media Control Reference > Call and Media Control COM Interfaces