title: Referencing another project in .Net Core
body: <p>I have 6 projects in a blank solution. I just want to reference a project to another. I have <code>HomeController</code> in <strong>Blog.Web</strong> projects. I want to access another project's methods like <code>IOrganizationService</code> in <strong>Blog.Services</strong> projects. How can I use IOrganization's method in HomeController class? For clear insight, please see picture. 
  <a href="https://i.stack.imgur.com/ueJkW.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ueJkW.png" alt="enter image description here"></a></p>
  
  <p>Red marks show the errors....</p>