Online resource – Digital Photography Best Practices and Workflow – by the American Society of Media Photographers (ASMP) and funded by the United States Library of Congress through its National Digital Information Infrastructure and Preservation Program (NDIIPP).
“Understanding the life cycle of an image has become a critical element of planning your digital imaging workflow. Part of this understanding includes understanding the relationship between each decision in the workflow process.”
More online here: http://www.dpbestflow.org/node/251 
The website, last updated in 2015, is supported by an excellent book:
- Russotti, Patti, & Anderson, Richard. (2010). Digital photography best practices and workflow handbook a guide to staying ahead of the workflow curve. (Links to an external site.) Burlington, MA: Focal Press.