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Rowling, J. K. (1999). Harry Potter and the chamber of secrets. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2007). Harry Potter and the deathly hallows. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2000). Harry Potter and the goblet of fire. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2005). Harry Potter and the half blood prince. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2003). Harry Potter and the order of the phoenix. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (1999). Harry Potter and the prisoner of azkaban. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (1997). Harry Potter and the sorcerer's stone. New York, NY :Arthur A. Levine Books,
http://www.muskingum.edu/~psych/psycweb/history/watson.htm
Rowling, J. K. (1999). Harry Potter and the chamber of secrets. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2007). Harry Potter and the deathly hallows. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2000). Harry Potter and the goblet of fire. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2005). Harry Potter and the half blood prince. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (2003). Harry Potter and the order of the phoenix. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (1999). Harry Potter and the prisoner of azkaban. New York, NY :Arthur A. Levine Books,
Rowling, J. K. (1997). Harry Potter and the sorcerer's stone. New York, NY :Arthur A. Levine Books,