You can archive, back up, and cite your work using GitHub, the API, or third-party tools and services.
When you archive a repository, you are letting people know that a project is no longer actively maintained.
You can archive a repository to make it read-only for all users and indicate that it's no longer actively maintained. You can also unarchive repositories that have been archived.
You can archive content and data on GitHub for other people to view and reference.
You can use third-party tools to cite and reference content on GitHub.
You can use the API or a third-party tool to back up your repository.