Works cited
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Farmer, Janet. Parent functions. Digital image. ShowMe. ShowMe, 2013. Web. 22 May 2015.
"Sign In to Register a Product or Access Resources." Cengage Learning. N.p., n.d. Web. 25 May 2015.
Farmer, Janet. Parent functions. Digital image. ShowMe. ShowMe, 2013. Web. 22 May 2015.
"Sign In to Register a Product or Access Resources." Cengage Learning. N.p., n.d. Web. 25 May 2015.