- Author: Heinrich Hartmann (editor), Corinna R. Unger (editor)
- Language: English
- Year: 2014
- Author: Martina Hartmann
- Language: German
- Year: 2010
- Author: Stig Hartmann
- Language: English
- Year: 1997
- Author: Teresa Toguchi Swartz, Douglas Hartmann, Rubén G. Rumbaut
- Language: English
- Year: 2017
- Author: Barrie Needham, Thomas Hartmann
- Language: English
- Year: 2012
- Author: Douglas Hartmann
- Language: English
- Year: 2016
- Author: William K. Hartmann
- Language: English
- Year: 2014