2012 - Bittersweet (Paperback) → Hardcover ISBN-13: 9781442430365 ISBN-10: 1442430362 Genre: Teen & Young Adult 2 2010 - Twenty Boy Summer (Paperback) → Paperback, Hardcover ISBN-13: 9780316051583 ISBN-10: 0316051586 Genres: Children's Books, Teen & Young Adult 16 |