[MSDN Library April 2000] IInternalUnknown (79.6875%)
MSDN Library - April 2000 > Platform SDK > Component Services > COM > COM Fundamentals > Reference > Interfaces
[MSDN Library April 2000] IInternalUnknown::QueryInternalInterface (29.375%)
MSDN Library - April 2000 > Platform SDK > Component Services > COM > COM Fundamentals > Reference > Interfaces > IInternalUnknown