Which of the following are examples of reference models that can be used for process identification.  ITIL  CMMI  SCOR  PCF  APQC

All of the mentioned models can be used for process identification. Here's a brief explanation of each:

1. ITIL (Information Technology Infrastructure Library): This is a set of detailed practices for IT service management (ITSM) that focuses on aligning IT services with the needs of business.

2. CMMI (Capability Maturity Model Integration): This is a process level improvement training and appraisal program. It is administered by the CMMI Institute, and it helps organizations to improve their ability to develop and maintain quality products and services.

3. SCOR (Supply Chain Operations Reference): This is a process reference model that has been developed and endorsed by the Supply Chain Council as the cross-industry, standard diagnostic tool for supply chain management.

4. PCF (Process Classification Framework): This is a taxonomy of business internally and externally sourced processes to assist in categorizing and benchmarking operations.

5. APQC (American Productivity and Quality Center): This is a nonprofit organization that provides business benchmarking, best practices, and knowledge management research. It uses a process classification framework (PCF) to categorize and benchmark operations.

So, all of the above - ITIL, CMMI, SCOR, PCF, and APQC - are examples of reference models that can be used for process identification.