Bibliography+of+Yo-Yos

Schulte, Dave. Personal interview 15 May 2010 "The history of the yo yo." Essortment Articles: Free Online Articles on Health, Science, Education & More... N.p., n.d. Web. 25 May 2010. . Val Krantz, Oliver. "Untitled Document." National Yo-Yo. N.p., n.d. Web. 25 May 2010. . "Yo-yo - Wikipedia, the free encyclopedia." Wikipedia, the free encyclopedia. N.p., n.d. Web. 25 May 2010. .