- Author: Burt C. Hopkins John J. Drummond
- Language: English
- Year: 2022
- Author: Ludger Hagedorn James Dodd
- Language: English
- Year: 2015
- Author: Burt Hopkins Steven Crowell (eds.)
- Language: English
- Year: 2003
- Author: Burt Hopkins Steven Crowell (eds.)
- Language: English
- Year: 2007
- Author: Martin Heidegger
- Language: English
- Year: 2009
- Author: Drummond John J., Hopkins Burt
- Language: English
- Year: 2014
- Author: Hopkins B Drummond J & Burt Hopkins & J. Drummond
- Language: English
- Year: 2014
- Author: Misc. authors
- Language: English
- Year: 2015
- Author: Burt Hopkins Steven Crowell
- Language: English
- Year: 2015
- Author: Burt Hopkins & Steven Crowell
- Language: English
- Year: 2015