Lewis, Kendra M.  <br/><br/>
Effects of positive action in elementary school on student behavior and social- emotional outcomes / 
Kendra M. Lewis, Stefanie D. Holloway, Niloofar Bavarian, Naida Silverthorn, David L. Dubois, Brian R. Flay, and Carl F. Siebert. 
 - USA ;  University of Chicago Press,  June 2021. 
 - volume 122, pages 635-655,  illustratuion. 
<br/><br/> The Elementary School Journal, v. 122, n. 4, pages 635-656, June 2021 
<br/><br/><label>Dewey Class. No.: </label>DPer 372.05 EL269 2021 v. 122 n. 1-4