Update README.md with BibTex citation

README.md

@@ -107,3 +107,16 @@ Such videos and data are provided by the owners of the source datasets above, an
 license terms and use restrictions. Users who access videos and data from these sources are responsible for 
 reviewing and confirming that their use complies with the terms and conditions.
 
+## Citation
+
+```bibtex
+@misc{zhang2026molmomotionforecastingpointtrajectories,
+    title={MolmoMotion: Forecasting Point Trajectories in 3D with Language Instruction}, 
+    author={Jianing Zhang and Chenhao Zheng and Yajun Yang and Max Argus and Rustin Soraki and Winson Han and Taira Anderson and Chun-Liang Li and Shuo Liu and Jiafei Duan and Zhongzheng Ren and Jieyu Zhang and Ranjay Krishna},
+    year={2026},
+    eprint={2606.18558},
+    archivePrefix={arXiv},
+    primaryClass={cs.CV},
+    url={https://arxiv.org/abs/2606.18558}, 
+}
+```