- Author: Robert Boyd Joan B. Silk
- Language: English
- Year: 2018
- Author: Robert Boyd
- Language: English
- Year: 2017
- Author: Robert Boyd
- Language: English
- Year: 2017
- Author: Robert Boyd Joan B. Silk
- Language: English
- Author: Robert Boyd Munger
- Language: English
- Year: 2010
- Author: Robert Boyd
- Language: English
- Year: 2017
- Author: Robert Boyd Joan B. Silk
- Language: English
- Year: 2017
- Author: Richard McElreath Robert Boyd
- Language: English
- Year: 2007
- Author: Robert Boyd Joan B. Silk
- Language: English
- Author: Robert Boyd (Author)
- Year: 1999