
Why Marriages Succeed or Fail
1995
ISBN 9780684802411
The Seven Principles for Making Marriage Work
2015
ISBN 9781101902912
What Makes Love Last?
2013
ISBN 9781451608489Hemmelighetene bak et lykkelig parforhold
2016
ISBN 9788279008750
Hemmelighetene bak et lykkelig parforhold
2020
ISBN 9788234400247
Livslang kjærlighet
2020
ISBN 9788234400254