Add citation section in README.md

Author: navidcy

README.md

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     <img alt="latest docs" src="https://img.shields.io/badge/docs-latest-blue.svg">
 </a>
 
+<a href="https://doi.org/10.5281/zenodo.14503323">
+    <img src="https://zenodo.org/badge/DOI/10.5281/zenodo.14503323.svg" alt="DOI">
+</a>
+
+
 # Atmosphere Cookbook
 
 An Atmosphere Cookbook 📔 of Recipes for analysing regional or global atmosphere model output. 👩🏽‍🍳 👨🏻‍🍳
@@ -46,3 +51,11 @@ If you can find a recipe that suits your purpose, then this is a great place to
 
 The structure and content of this repository draws inspiration from the [Consortium for Ocean-Sea Ice Modelling in Australia (COSIMA)](http://cosima.org.au/)'s [Cookbook repository](https://github.com/COSIMA/cosima-recipes) that holds recipes for analysing ocean-sea ice model output.
 
+
+
+## Citation
+
+If you use a recipe from the Cookbook for your research or teaching, or have based your analysis on one of the recipes, we would be grateful if you could cite:
+
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.14503323.svg)](https://doi.org/10.5281/zenodo.14503323)
+