- Author: Robert W. Gardner
- Language: English
- Year: 2021
- Author: Robert Owen Gardner
- Language: English
- Year: 2020
- Author: A. Doelman Robert A. Gardner Tasso J. Kaper
- Language: English
- Year: 2002
- Author: Robert L. Gardner
- Language: English
- Year: 1990
- Author: Monica G. Turner Robert H. Gardner (auth.)
- Language: English
- Year: 2015
- Author: Robert GardnerBarbara Gardner ConklinSalvatore Tocci
- Language: English
- Year: 2010
- Author: Robert GardnerBarbara Gardner Conklin
- Language: English
- Year: 2010
- Author: Robert B. Gardner
- Language: English
- Year: 1989