metaliterature
/ˌmɛtəˈlɪt(ə)rɪtʃə/noun
The discussion in any piece of writing of other texts; (Literary Criticism ) any literary text which takes the nature of literature as its object; such texts collectively.
Origin
1960s; earliest use found in Journal of Politics. From meta- + literature, perhaps after French métalittérature. Compare slightly earlier meta-literary.