Update README.md (#2)

- Update README.md (a28eeaad3da65872a99f6395e3c7e85d499918c0)


Co-authored-by: Jacob Li <jacobli@users.noreply.huggingface.co>

README.md

@@ -86,9 +86,13 @@ We use [RTP-LX](https://arxiv.org/abs/2404.14397) multilingual dataset for promp
 
 
 ## Citation [optional]
-
-TBD
-
-**BibTeX:**
-
-[More Information Needed]
+```
+@misc{li2024preference,
+      title={Preference Tuning For Toxicity Mitigation Generalizes Across Languages}, 
+      author={Xiaochen Li and Zheng-Xin Yong and Stephen H. Bach},
+      year={2024},
+      eprint={2406.16235},
+      archivePrefix={arXiv},
+      primaryClass={id='cs.CL' full_name='Computation and Language' is_active=True alt_name='cmp-lg' in_archive='cs' is_general=False description='Covers natural language processing. Roughly includes material in ACM Subject Class I.2.7. Note that work on artificial languages (programming languages, logics, formal systems) that does not explicitly address natural-language issues broadly construed (natural-language processing, computational linguistics, speech, text retrieval, etc.) is not appropriate for this area.'}
+}
+```