- Author: William R. Roff
- Language: English
- Year: 2018
- Author: William R. Roff
- Language: English
- Year: 2015
- Author: David Joel Steinberg, David P. Chandler, William R. Roff, John R. W. Smail, Robert H. Taylor, Alexander Woodside, David K. Wyatt
- Language: English
- Year: 1988
- Author: William R. Roff
- Language: English
- Year: 2009