[MSDN Library June 1998] SUM (100%)

MSDN Library Visual Studio 6.0 > Microsoft Office Development > Office 97 Documentation > Excel > Excel 97 Worksheet Functions Reference > Function Reference

[MSDN Library June 1998] SUM Command (26.5170122275385%)

MSDN Library Visual Studio 6.0 > Visual FoxPro Documentation > Reference > A to Z Language Reference

[MSDN Library June 1998] Sum Function (25.2032520325203%)

MSDN Library Visual Studio 6.0 > Microsoft Office Development > Office 95 Documentation > Office > Microsoft Office 95 Data Access Reference > Part 2 SQL A-Z Reference

[MSDN Library June 1998] Sum Function (Microsoft Jet SQL) (20.5683479532164%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > DAO SDK > Microsoft Jet Database SQL Reference > Functions

[MSDN Library June 1998] Sum Function (18.0276057791538%)

MSDN Library Visual Studio 6.0 > Microsoft Office Development > Office 97 Documentation > Office > Microsoft Office 97/Visual Basic Language Reference > Volume 1 > SQL Language Reference