Question

What are literary sources? What are the two main types of such sources

Answer 1

all literature is a kind of source literature. It might, for example, be cited and used as sources in academic writings. However, if used in this broad meaning the concept becomes synonymous with literature and the term thus superfluous and meaningless. The meaning of "source literature" is relative.

Answer 2

litreacy is a kind of information source

two main resources are

€€ litreacy in science

€€ linking the languages