Hi Brian,
two are custom stuff, but here are the other references ({ = <, } = >):
{Reference Include="DotNetNuke, Version=6.1.1.12, Culture=neutral, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\DotNetNuke.dll{/HintPath}
{/Reference}
{Reference Include="DotNetNuke.Abstractions, Version=9.4.4.0, Culture=neutral, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\DotNetNuke.Abstractions.dll{/HintPath}
{/Reference}
{Reference Include="DotNetNuke.DependencyInjection, Version=9.4.4.0, Culture=neutral, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\DotNetNuke.DependencyInjection.dll{/HintPath}
{/Reference}
{Reference Include="DotNetNuke.Web"}
{HintPath}..\..\bin\DotNetNuke.Web.dll{/HintPath}
{/Reference}
{Reference Include="Custom1, Version=1.9.1.8, Culture=neutral, PublicKeyToken=edbe51ad942a3f5c, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\Custom1.dll{/HintPath}
{/Reference}
{Reference Include="Custom2, Version=6.0.0.0, Culture=neutral, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\Custom2.dll{/HintPath}
{/Reference}
{Reference Include="Microsoft.ApplicationBlocks.Data, Version=2.0.0.0, Culture=neutral, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\Microsoft.ApplicationBlocks.Data.dll{/HintPath}
{/Reference}
{Reference Include="Microsoft.Extensions.DependencyInjection, Version=2.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60, processorArchitecture=MSIL"}
{SpecificVersion}False{/SpecificVersion}
{HintPath}..\..\bin\Microsoft.Extensions.DependencyInjection.dll{/HintPath}
{/Reference}
{Reference Include="System" /}
{Reference Include="System.Data" /}
{Reference Include="System.Data.DataSetExtensions" /}
{Reference Include="System.Drawing" /}
{Reference Include="System.Web" /}
{Reference Include="System.Web.ApplicationServices" /}
{Reference Include="System.Web.DynamicData" /}
{Reference Include="System.Web.Entity" /}
{Reference Include="System.Web.Extensions" /}
{Reference Include="System.Xml" /}
{Reference Include="System.Xml.Linq" /}
{Reference Include="WindowsBase" /}
Happy DNNing!
Michael