Coba jelasin Bibliografi dari Wheely Willy dong

Deborah Turner, Diana Mohler, authors; Rhonda McHugh, illustrator (1998). How Willy got his Wheels. ISBN 0-944875-54-8

Deborah Turner, Diana Mohler, authors; Sue Ehrends, illustrator (2003). How Willy Got His Wings: The Further Adventures of Wheely Willy. ISBN 0-944875-88-2

Colleen Needles, Kit Carlson, Kim Levin (2000). Working Dogs: Tales from Animal Planet's K-9 to 5 World. ISBN 1-56331-843-1