Hendershot, Gerry E. “The Effects of Survey Nonresponse and Proxy Response on Measures of Employment for Persons With Disabilities”. Disability Studies Quarterly 24, no. 2 (March 15, 2004). Accessed May 5, 2026. https://www.osu.tests.sfulib4.publicknowledgeproject.org/index.php/dsq/article/view/481.