- Wikipedia: Source lines of code
- Wikipedia: Software metric
- NASA IV&V Facility Metrics Data Program - Line of Code Metrics
- Software Metrics Glossary by McCabe & Associates
- Software Size Measurement: A Framework for Counting Source Statements by SEI
- Software Metrics Sites
- Product Metrics for Software by Pressman & Associates
- Metrics collection tools for C and C++ Source Code
- QSM Source Code Counter Links