# How to Cite This Book

The material in Pythia Foundations is licensed for free and open consumption and reuse. All code is served under [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0), while all non-code content is licensed under [Creative Commons BY 4.0 (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/). Effectively, this means you are free to share and adapt this material so long as you give appropriate credit to the Project Pythia community.

The source code for the book is [released on GitHub](https://github.com/ProjectPythia/pythia-foundations) and archived on Zenodo. This DOI will always resolve to the latest version of the book source:
<https://doi.org/10.5281/zenodo.7884571>

If material in Pythia Foundations is useful in published work, you can cite a specific version of the book as:

> Rose, B. E. J., Kent, J., Tyle, K., Clyne, J., Banihirwe, A., Camron, D., May, R., Grover, M., Ford, R. R., Paul, K., Morley, J., Eroglu, O., Kailyn, L., & Zacharias, A. (2023). Pythia Foundations (Version v2023.05.01) [https://doi.org/10.5281/zenodo.7884572](https://doi.org/10.5281/zenodo.7884572)