Blah blah blah, we can do this all day. The ultimate source is the 1st commandment. Written on a stone tablet by God himself. Given to Moses by God directly. Stored in the ark of the covenant. Argue with God. You seem to know better what he meant than he did. Or is your argument that he is just a poor writer that can’t get a point across clearly?
Deuteronomy 6:14
You shall not go after other gods, the gods of the peoples who are around you—
Exodus 23:13
“Pay attention to all that I have said to you, and make no mention of the names of other gods, nor let it be heard on your lips.
Deuteronomy 32:17
They sacrificed to demons that were no gods, to gods they had never known, to new gods that had come recently, whom your fathers had never dreaded.
Joshua 24:2
And Joshua said to all the people, “Thus says the Lord, the God of Israel, ‘Long ago, your fathers lived beyond the Euphrates, Terah, the father of Abraham and of Nahor; and they served other gods.
Deuteronomy 28:14
And if you do not turn aside from any of the words that I command you today, to the right hand or to the left, to go after other gods to serve them.
All those verses show is that some people believed there were other gods. Deuteronomy 32:17, which you quoted, shows that the “gods” that some people believed in were actually just demons and not true gods at all.God prohibited people from believing in false gods. The verses you quoted don't substantiate your position at all, while the verses I quoted easily refute your blasphemy.
The ultimate source is God, who provided revelation in a variety of ways. The stone tablets was one form of revelation while speaking through prophets was another. Your statements make the stone tablets out to be “gods”, which isn't surprising considered your blasphemous beliefs.