Principled BSDF reflection affects whole eye - Materials and Textures - Blender Artists Community
Principled BSDF for Physically-Based Rendering in Blender
Principled BSDF — Blender Manual
cycles render engine - How to use the Principled BSDF shader to create an old-paper-like material? - Blender Stack Exchange
Principled BSDF - Quick and Easy PBR in Cycles - BlenderNation
How to Use Blender's new ULTIMATE Shader: Principled — Blender Guru
Principled BSDF Shader Settings for Steel in Blender - Jigasu.Com
How to Add Principled BSDF in Blender - cgian.com
Here's a free Principled BSDF Shader guide to help Blender users, an extract from the free PDF guide and YouTube tutorial below, hope you find it useful :D : r/learnblender
Principled Hair BSDF — Blender Manual
Principled BSDF is based on PxrDisney - PxrDisney is legacy - Blender and CG Discussions - Blender Artists Community