- Author: Richard Curtis
- Language: English
- Year: 2007
- Author: Richard Curtis
- Language: English
- Year: 2014
- Author: Richard Curtis
- Language: English
- Year: 2014
- Author: Richard Curtis, Paul Herrick, Kevin Barrett, Robert N. Bellah, Michael Benedikt, Roland Boer, James P. Carse, Joseph Chuman, Dr. David Ray Griffin, William F. Harms
- Language: English
- Year: 2010
- Author: Richard Curtis
- Language: English
- Year: 2007
- Author: Richard Curtis
- Language: English
- Year: 2014
- Author: Selley Richard Curtis, Sonnenberg Stephen A
- Language: English
- Year: 2016
- Author: Richard Curtis
- Language: English
- Year: 1997