- Author: Glenn Ledder
- Language: English
- Year: 2022
- Author: Glenn Ledder
- Language: English
- Year: 2023
- Author: Glenn Ledder
- Language: English
- Year: 2023
- Author: Glenn Ledder
- Language: English
- Year: 2023
- Author: Glenn Ledder, Timothy D. Comar, Jenna P. Carpenter
- Language: English
- Year: 2013
- Author: Glenn Ledder (auth.)
- Language: English
- Year: 2013