- Author: Lewis S. Nelson, Robert S. Hoffman, Mary Ann Howland, Neal A. Lewin, Lewis R. Goldfrank
- Language: English
- Year: 2018
- Author: Ronald C. Martella, J. Ron Nelson, Robert L. Morgan, Nancy E. Marchand-Martella
- Language: English
- Year: 2013
- Author: Corke Thomas, Nelson Robert
- Language: English
- Year: 2018
- Author: Corke Thomas, Nelson Robert
- Language: English
- Year: 2018
- Author: Nelson Robert W.
- Language: English
- Author: Harry Nelson Robert Jurmain
- Language: English
- Year: 1999