Sources
http://www.pluggedin.com/book-reviews/crank/
http://www.famousauthors.org/ellen-hopkins
http://ellenhopkins.com/YoungAdult/bio/
http://childrensbooks.about.com/od/authorsillustrato/a/Interview-With-YA-Author-Ellen-Hopkins.htm
http://www.shmoop.com/crank/themes.html
https://www.commonsensemedia.org/book-reviews/crank
http://www.famousauthors.org/ellen-hopkins
http://ellenhopkins.com/YoungAdult/bio/
http://childrensbooks.about.com/od/authorsillustrato/a/Interview-With-YA-Author-Ellen-Hopkins.htm
http://www.shmoop.com/crank/themes.html
https://www.commonsensemedia.org/book-reviews/crank