[MSDN Library June 1998] Per Seat Licensing (100%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 5: Windows NT Update 1 > Licensing > Choosing Between the Two Licensing Modes

[MSDN Library June 1998] Per Server Licensing (95%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT 3.51 Resource Kit > Windows NT Resource Kit Volume 5: Windows NT Update 1 > Licensing > Choosing Between the Two Licensing Modes

[MSDN Library June 1998] Per Seat Mode (28.8253910659571%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Microsoft SQL Server Programmer's Toolkit > SQL Server Setup > Chapter 3 Server Options > Licensing Mode

[MSDN Library June 1998] Per-User Settings (26.9905865910305%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Appendix A - Answer Files and UDFs > Adding Specific Functionality to Your Customized Setup

[MSDN Library June 1998] Per Server Mode (23.2698355104015%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Microsoft SQL Server Programmer's Toolkit > SQL Server Setup > Chapter 3 Server Options > Licensing Mode