How to properly reference a library in nuget-based architecture

I'm trying to create couple nuget packages for internal company use: OurCompany.Infrastructure.Logging.Interfaces and just OurCompany.Infrastructure.Logging.

So I created two class library projects in the same solution, provided an implementation for OurCompany.Infrastructure.Logging.Interfaces and created a package.

Now I have a question: how to properly reference the OurCompany.Infrastructure.Logging.Interfaces library in OurCompany.Infrastructure.Logging project?

Should I add it as a nuget package or simply add as a project reference?