Add citation recommendation

Author: simonharrer

README.md

@@ -56,6 +56,20 @@ Check out the [CONTRIBUTING](./CONTRIBUTING.md) page.
 
 ## More
 
+### Citation
+
+If you need to cite this standard, you can use the following BibTeX entry:
+
+```bibtex
+@manual{ODCS2025,
+  title        = {Open Data Contract Standard (ODCS)},
+  author       = {{Bitol}},
+  organization = {LF AI \& Data Foundation},
+  year         = {2025},
+  url          = {https://bitol-io.github.io/open-data-contract-standard}
+}
+```
+
 ### History
 Formerly known as the data contract template, this standard is used to implement Data Mesh at [PayPal](https://about.pypl.com/). Starting with v2.2.0, it is maintained by a 501c6 non-profit organization called [AIDA User Group (Artificial Intelligence, Data, and Analytics User Group)](https://aidaug.org). On November 30th, 2023, [AIDA User Group](https://aidaug.org) and the [Linux Foundation AI & Data](https://lfaidata.foundation/) joined forces to create [Bitol](https://bitol.io). Bitol englobes ODCS and future standards & tools.