[MSDN Library June 1998] CheckRadioButton (50.0670498084291%)

MSDN Library Visual Studio 6.0 > Platform SDK > User Interface Services > Controls > Buttons > Button Reference > Button Functions

[MSDN Library April 2000] CheckRadioButton (50.0670498084291%)

MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows User Interface > Controls > Buttons > Button Reference > Button Functions

[MSDN Library April 2000] CheckRadioButton (42.7011494252874%)

MSDN Library - April 2000 > Windows CE Documentation > Application Development > API Reference > User Interface > Functions