How can I phrase correctly "from where his PhD is". In the context of presenting someone, "He is XX, PhD from XX University"? or "XX, Phd of XX University"? Thanks
If you're presenting the person in a social context, describe his/her credentials in full sentences. "This is XYZ, she has a PhD in oceanic science from the University of Neverland", or "XYZ obtained a PhD from Neverland University. She's an expert in green turtles." If it's on a formal piece of writing, "XYZ, PhD (U. of Neverland)" suffices.