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"Animal Cell Anatomy - EnchantedLearning.com." Animal Cell Anatomy - EnchantedLearning.com. N.p., n.d. Web. 28 Apr. 2014. .

Miller, Kenneth R., and Joseph S. Levine. "Eukaryotic Cell Structure." Prentice Hall Biology. Upper Saddle River, NJ: Prentice Hall, 2004. 174-81. Print.

"Molecular Expressions Cell Biology: Animal Cell Structure." Molecular Expressions Cell Biology: Animal Cell Structure. N.p., n.d. Web. 28 Apr. 2014. .