How to add third party SDK to xamarin.forms

Hello everybody!
I need to create a cross-platform mobile app that will use a third party SDK library.
For Android and iOS projects there is a special template like Bindings Library. But I don't see any Bindings Library template in Multiplatform.
Do you have any idea how to bypass that?

Thank you in advance for your time and efforts to help me!

P.S. I use Visual Studio 7.4.3.10.