- Author: John Hellermann
- Language: English
- Year: 2008
- Author: Joan Kelly Hall (editor), John Hellermann (editor), Simona Pekarek Doehler (editor)
- Language: English
- Year: 2011
- Author: Joan Kelly Hall, John Hellermann, Simona Pekarek Doehler
- Language: English
- Year: 2011
- Author: Joan Kelly Hall John Hellermann Simona Pekarek Doehler
- Language: English
- Year: 2011
- Author: John Hellermann
- Language: English
- Year: 2008
- Author: Joan Kelly Hall John Hellermann Simona Pekarek Doehler
- Language: English
- Year: 2011
- Author: John Hellermann
- Language: English
- Year: 2008
- Author: John Hellermann
- Language: English
- Year: 2008