Roberts, Christa.

13 going on 30 : a novel / Thirteen going on thirty. by Christa Roberts. - New York : Bantam Books, 2004. - 142 p. ; 18 cm.

"Based on the motion picture screenplay by Cathy Yuspa and Jush Goldsmith and Niels Mueller, story by Cathy Yuspa and Josh Goldsmith"--T.p.

ISBN: 0553494627 (pbk.) :