MPL & CC-BY-SA both allow putting only a small license statement to place I deem fit. But both of them use "this":
This Source Code Form is subject to the terms of the Mozilla Public License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
I'm not risking rephrasing the notes because IDKI don't know if it's allowed (in MPL case it seems hardcoded), even though I want to. Is it OK to put it all into a separate file stating something like:
For source code: [MPL note]
For non source code: [CC note]
implying that MPL is for all source code files and CC is for the rest?