As did the structuralists, will it be enough to see intertextuality as a simple textual effect? Is a text only a closed system into itself which merely refers to other texts and which reveals its meaning in relation to them? According to definitions proposed by P.V. Zima within sociology of text frame, a literary text is not a closed structure; it must also be seen as an "open structure". The best way to ensure the opening of text to exterior is first the process of intertextuality. This term, considered as a major criterion of "literarity" of a text, is first defined in accordance with a conception of a closed system; it begins as to be seen in its relation to external reality. In other words, a literary text is also informed by an external reality, materializes its quality of referentiality by referring to it. In this work, different from common definitions proposed about intertextuality, we propose to study the text links to external reality, to update how it displays its referentiality, show that intertextuality is not seen as a simple textual effect, evaluate thus the terms of its relations with external reality.