Leonard Daly has written or contributed to the books and public documents listed below.
- X3D: Extensible 3D Graphics for Web Authors. Co-authored with Don Brutzman. Morgan-Kaufmann, © 2007.
- Handbook of Virtual Reality. Stanney, Kay M. editor. Contributed to the chapter 25, "Content Design for Virtual Environments". Lawrence Erlbaum Associates, © 2002.
- X3D Specifications as Co-Chair and Secretary of the X3D Working Group
- ISO/IEC 19775-1: Abstract Functionality
- ISO/IEC 19775-2: SAI Abstract Functionality
- ISO/IEC 19776-1: XML Encoding
- ISO/IEC 19776-2: Classic VRML Encoding
- ISO/IEC 19776-3: Compressed Binary Encoding
- ISO/IEC 19777-2: Java Language Binding