APA (7th ed.) Citation

Burnard, L., Rahtz, S., & Walsh, N. (2004). A unified model for text markup: TEI, Docbook, and beyond. XML Europe.

Chicago Style (17th ed.) Citation

Burnard, L., S. Rahtz, and N. Walsh. A Unified Model for Text Markup: TEI, Docbook, and Beyond. XML Europe, 2004.

MLA (9th ed.) Citation

Burnard, L., et al. A Unified Model for Text Markup: TEI, Docbook, and Beyond. XML Europe, 2004.