- Author: Gavin Betts, Daniel Franklin
- Language: English
- Year: 2004
- Author: OpenStax College, J. Gordon Betts, Peter DeSaix, Eddie Johnson, Oksana Korol, Dean H. Kruse, Brandon Poe, Kelly A. Young, James A. Wise
- Language: English
- Year: 2013
- Author: Matthew W. Betts, M. Gabriel Hrynick
- Language: English
- Year: 2021
- Author: Bruce Betts PhD
- Language: English
- Author: Matthew W. Betts, M. Gabriel Hrynick
- Language: English
- Year: 2021
- Author: Paul Betts (editor), Greg Eghigian (editor)
- Language: English
- Year: 2022
- Author: Alexander Betts
- Language: English
- Year: 2010
- Author: Gregory Betts
- Language: English
- Year: 2013
- Author: Gregory Betts
- Language: English
- Year: 2021
- Author: Raymond F. Betts
- Language: English
- Year: 2019