Hardcover: 32 pages   Publisher: Viking Juvenile (October 14, 2010)   ISBN-10: 0670011622   ISBN-13: 978-0670011629           Hardcover: 40 pages   Publisher: Scholastic Press (October 1, 2009)   ISBN-10: 0545052513   ISBN-13: 978-0545052511           192 pages   Publisher: Scholastic Paperback;   Reprint edition (April 1, 2002)   ISBN-10: 0439385504   ISBN-13: 978-0439385503        Hardcover: 160 pages   Publisher: Scholastic Press (September 1, 2007)   ISBN-10: 043967199X   ISBN-13: 978-0439671996           160 pages    Publisher: Scholastic Press (June 1, 2006)   ISBN-10: 0439671973   ISBN-13: 978-0439671972         64 pages   Publisher: Scholastic: 1st edition (February 1, 2004)   ISBN-10: 0439425921   ISBN-13: 978-0439425926        240 pages   Publisher: Harper Collins; 1st ed edition (July 3, 1996)   ISBN-10: 006017191X   ISBN-13: 978-0060171919