What is an example of intertextual reference propaganda?

I'm going to give a short answer: About 5 years ago I published a collection of over 1,125 selected quotations on Propaganda, Persuasion and Deception. It's available as a free PDF download at several places on the web. Search for it under Propaganda, Persuasion and Deception, by Laird Wilcox. I think you'll find it very useful.