American Nurses Association. Nursing Information Bureau. <i>Become a nurse : your country needs you</i>. Washington, D.C. UNT Digital Library.
United States Government Printing Office; scan provided by UNT Digital Library, <a href="https://en.wikipedia.org/wiki/University_of_North_Texas" class="extiw" title="en:University of North Texas">University of North Texas</a>, Denton, TX
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