works perceived by an audience or reader of the text. These references are sometimes made deliberately and depend on a reader's prior knowledge and understanding of the referent, but the effect of intertextuality is not always intentional and is sometimes inadvertent. Often associated with strategies employed by writers working in imaginative registers (fiction, poetry, and drama and even non-written texts like performance art and digital media), intertextuality may now be understood as intrinsic to any text.

Intertextuality has been