i can't direct you to texts, but i can address the other question - at least as far as i have experienced it with people i know.
the difference seems to be in style (ie they prefer the baggage that goes with the word "communism" to the baggage that goes with the word "anarchy"), and in emphasis (economics is generally much more important to anyone calling themselves a communist), and in attitude (communists tend to consider themselves rigorous in their thinking--although a skeptic could just rebut that they can consider themselves rigorous because they like to pay attention to things that are more easily measured--whereas anarchists are more loosey-goosey--or inclusive of the ineffable).