Update reference.md

Author: priya-gitTest

learners/reference.md

@@ -2,6 +2,10 @@
 title: 'Reference'
 ---
 
+1. [Using Python Projects With Pixi](https://prefix.dev/blog/using_python_projects_with_pixi)
+2. [Packaging Python Projects](https://packaging.python.org/en/latest/tutorials/packaging-projects/)
+3. [pyOpenSci Python Package Guide](https://www.pyopensci.org/python-package-guide/index.html)
+
 ## Glossary
 
 Build