Boek 1

Being Happy!

door Andrew Matthews
June 19th, 1990
Engels
Paperback

Boek 2

Making Friends

door Andrew Matthews
June 19th, 1991
Engels
Paperback

Boek 3

February 15th, 1999
Engels
Paperback

Boek 4

Being a Happy Teenager

door Andrew Matthews
January 1st, 2002
Engels
Paperback

Boek 5

Happiness Now!

door Andrew Matthews
October 1st, 2005
Engels
Paperback