- Author: Carl Greer Alberto Villoldo
- Language: English
- Year: 2014
- Author: David Perlmutter Alberto Villoldo
- Language: English
- Year: 2011
- Author: Alberto Villoldo Stanley Krippner
- Language: English
- Year: 1987
- Author: Alberto Villoldo
- Language: English
- Year: 2001
- Author: Alberto Villoldo Ph.D.
- Language: English
- Year: 2005
- Author: Alberto Villoldo Ph.D.
- Language: English
- Year: 2008
- Author: Alberto Villoldo
- Language: English
- Year: 2001