Colleen Dunkel

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
In search of a missing friend. Con audiocassetta	978-88-8148-320-4 (88-8148-320-3)	2006
Underwater mystery	978-88-8148-330-3 (88-8148-330-0)	1999	Willy Signora