
- Author: Charles Wankel J. Sibley Law
- Language: English
- Year: 2011

- Author: Charles Wankel Agata Stachowicz-Stanusch
- Language: English
- Year: 2011

- Author: Charles Wankel James F. Stoner
- Language: English
- Year: 2010

- Author: Charles Wankel
- Language: English
- Year: 2007

- Author: Charles Wankel James A.F. Stoner
- Language: English
- Year: 2008

- Author: Charles Wankel
- Language: English
- Year: 2009

- Author: Charles Wankel
- Language: English
- Year: 2008

- Author: Charles Wankel
- Language: English

- Author: Charles Wankel James A.F. Stoner
- Language: English
- Year: 2008

- Author: Charles Wankel Jan Kingsley
- Language: English
- Year: 2009