[MSDN Library April 2000] NPER (100%)

MSDN Library - April 2000 > Office Developer Documentation > Office 97 Documentation > Excel > Excel 97 Worksheet Functions Reference > Function Reference

[MSDN Library April 2000] NPer (25.1124606387764%)

MSDN Library - April 2000 > Windows CE Documentation > Visual Development Environment > Windows CE Toolkit for Visual Basic 6.0 > Programmer's Reference > Methods

[MSDN Library April 2000] NPer Function (14.1869780161122%)

MSDN Library - April 2000 > Office Developer Documentation > Office 97 Documentation > Office > Microsoft Office 97/Visual Basic Language Reference > Volume 5 > Microsoft Visual Basic for Applications Language Reference