Metadata standards and practices continue to grow and evolve in effort to provide access to information in the ever changing digital universe. Below are some additional resources that discuss current issues and provide practical implementation guidelines for metadata.

• Caplan, Priscilla. (2003). Metadata Fundamentals for All Librarians. Chicago, American Library Association.
• Cole, Timothy W. and Foulonneau, Muriel. (2009). Using the Open Archives Initiative Protocol for Metadata Harvesting. Westport, Conn., Libraries Unlimited.
• Cole, Timothy W. and Han, Myung-Ja. (2013). XML for Catalogers and Metadata Librarians. Westport, Conn., Libraries Unlimited.
• Metadata in practice. (2004). Diane I. Hillmann, Elaine L. Westbrooks, [editors]. Chicago, American Library Association.
• Zeng, Marcia Lei and Qin, Jian. (2008). Metadata. New York, Neal-schuman Publishers.

• Greenberg, Jane (2005). "Understanding Metadata and Metadata Schemes" in Cataloging & Classification Quarterly 40(3), pp. 17 – 36.
• Riley, Jenn, John Chapman, Sarah Shreeves, Laura Akerman, and William Landis. 2008. "Promoting Shareability: Metadata Activities of the DLF Aquifer Initiative." Journal of Library Metadata 8, no. 3: 221–248.
• Shreeves, Sarah L., Jenn Riley, and Liz Milewicz. 2006. "Moving Towards Shareable Metadata." First Monday 11, no. 8. https://firstmonday.org/ojs/index.php/fm/article/view/1386/1304.
• Coyle, K. (March 2005). "Understanding metadata and its purpose", Journal of Academic Librarianship 31(2), pp.160-163. UIUC licensed content. Available: http://dx.doi.org/10.1016/j.acalib.2004.12.010
• Heery, Rachel, and Manjula Patel. 2000. “Application Profiles: Mixing and Matching Metadata Schemas.” Ariadne 25. Available at: http://www.ariadne.ac.uk/issue25/app-profiles
• Elings, M. W. and Waibel, G. (2007). "Metadata for All: Descriptive Standards and Metadata Sharing across Libraries, Archives and Museums." First Monday 12, no. 3 (March). Available at: http://journals.uic.edu/ojs/index.php/fm/article/view/1628/1543
• Tennant, R. (2004) "A bibliographic metadata infrastructure for the twenty-first century." Library Hi Tech 22.2 (Spring 2004): 175(7) UIUC licensed content. Available: http://dx.doi.org/10.1108/07378830410524602
• Riley, J. (2010). Seeing Standards: A Visualization of the Metadata Universe. Available at: http://jennriley.com/metadatamap/
• Gill, T., Gilliland, A. J. and Woodley, M. S. (1998- ). Introduction to Metadata: Pathways to Digital Information (Online Edition, Version 3.0). Los Angeles: The J. Paul Getty Trust. Available at: http://www.getty.edu/research/publications/electronic_publications/intrometadata/index.html