1. J. Rumbaugh Jacobson I. and Booch G. 2004. The Unified Modeling Language Reference Manual. Pearson Higher Education. J. Rumbaugh Jacobson I. and Booch G. 2004. The Unified Modeling Language Reference Manual. Pearson Higher Education.
2. Formalisations and applications of BPMN
3. BPMN: An introduction to the standard
4. ISO/IEC. 2010. "Software Engineering - Metamodel for Development Methodologies - Notation. " in ISO/IEC 24744:2010 / Amd 1. ed 2010. ISO/IEC. 2010. "Software Engineering - Metamodel for Development Methodologies - Notation. " in ISO/IEC 24744:2010 / Amd 1. ed 2010.
5. ISO/IE. 2014 "ISO 24744: 2014 Software Engineering Metamodel for Development Methodologies " ed 2014. ISO/IE. 2014 "ISO 24744: 2014 Software Engineering Metamodel for Development Methodologies " ed 2014.