- Author: Matthew J. Gibney Randall Hansen
- Language: English
- Year: 2005
- Author: Jack Canfield Mark Victor Hansen Kimberly Kirberger
- Language: English
- Year: 1997
- Author: James R. Hansen
- Language: English
- Year: 2005
- Author: Ph.D. Randall S. Hansen Ph.D. Katharine Hansen
- Language: English
- Year: 2008
- Author: Elaine Tuttle Hansen
- Language: English
- Year: 1997
- Author: Jim Collins Morten T. Hansen
- Language: English
- Year: 2011
- Author: Carl J. Hansen Steven D. Kawaler
- Language: English
- Year: 1996
- Author: Hardy Hansen Gerald M. Quinn
- Language: English
- Year: 1992
- Author: Valerie Hansen
- Language: English
- Year: 2008