Raidl, Martha, Shelly Johnson, Kali Gardiner, Marty Denham, Kris Spain, Rhea Lanting, Cammie Jayo, Audrey Liddil, and Karen Barron. 2004. “Use Retrospective Surveys to Obtain Complete Data Sets and Measure Impact in Extension Programs”. Journal of Extension 42 (2). https://archives.joe.org/joe/2004april/rb2.php.
A Searchable Database of Research for the Expanded Food and Nutrition Education Program