Update README.md

README.md

@@ -66,6 +66,19 @@ size_categories:
 - 1M<n<10M
 ---
 
+## Citation
+```
+@misc{phatthiyaphaibun2025mangosteenopenthaicorpus,
+      title={Mangosteen: An Open Thai Corpus for Language Model Pretraining}, 
+      author={Wannaphong Phatthiyaphaibun and Can Udomcharoenchaikit and Pakpoom Singkorapoom and Kunat Pipatanakul and Ekapol Chuangsuwanich and Peerat Limkonchotiwat and Sarana Nutanong},
+      year={2025},
+      eprint={2507.14664},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2507.14664}, 
+}
+```
+
 We have collected additional Thai text that is unlikely to be included in the common crawl from various sources. The total number of documents collected is as follows:425,304 documents, we deduplication these noncc documents to later divide them into train sets for further web data and validation set.
 
 The following table shows the analysis of the data after deduplication.