These downloads may help with the exercises and other parts of the book. Get them all at once with a tgz archive or a zip archive.

Chapter 4: Introduction to References

Chapter 5: References and Scoping

Chapter 6: Manipulating Complex Data Structures

Chapter 7: Subroutine references

Chapter 8: Filehandle references

Chapter 9: Regular Expressions References

Chapter 10: Practical Reference Tricks

Chapter 19: Making Animals with Moose