When exporting threads, regardless of format or model, the "References" section of the thread is not included. In-text citations are included in the exported thread (【1】,【2】, &c), however they do not correspond to anything.
As an academic writer, I absolutely require the sources for my research included in my exported threads. Academic and intellectual honesty mandates this. Therefore, when exporting a thread which, at times, may span millions of tokens, it must contain the references which were researched.